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Find SF parking cops

https://walzr.com/sf-parking/
357•alazsengul•3h ago•210 comments

Libghostty is coming

https://mitchellh.com/writing/libghostty-is-coming
407•kingori•7h ago•112 comments

I can't stay after what Ruby Central did

https://gist.github.com/simi/349d881d16d3d86947945615a47c60ca
41•retrorubies•48m ago•6 comments

Markov chains are the original language models

https://elijahpotter.dev/articles/markov_chains_are_the_original_language_models
170•chilipepperhott•4d ago•75 comments

Privacy Commissioners find TikTok collected sensitive data from children

https://www.priv.gc.ca/en/opc-news/news-and-announcements/2025/nr-c_250923/
30•Improvement•1h ago•9 comments

Getting AI to work in complex codebases

https://github.com/humanlayer/advanced-context-engineering-for-coding-agents/blob/main/ace-fca.md
137•dhorthy•6h ago•136 comments

How to draw construction equipment for kids

https://alyssarosenberg.substack.com/p/how-to-draw-construction-equipment
49•holotrope•2h ago•20 comments

Apple A19 SoC die shot

https://chipwise.tech/our-portfolio/apple-a19-dieshot/
30•giuliomagnifico•2h ago•16 comments

Go has added Valgrind support

https://go-review.googlesource.com/c/go/+/674077
427•cirelli94•12h ago•107 comments

Is Fortran better than Python for teaching basics of numerical linear algebra?

https://loiseaujc.github.io/posts/blog-title/fortran_vs_python.html
18•Bostonian•1h ago•18 comments

Is life a form of computation?

https://thereader.mitpress.mit.edu/is-life-a-form-of-computation/
11•redeemed•40m ago•3 comments

Launch HN: Strata (YC X25) – One MCP server for AI to handle thousands of tools

105•wirehack•6h ago•56 comments

Qwen3-VL: Sharper Vision, Deeper Thought, Broader Action

https://qwen.ai/blog?id=99f0335c4ad9ff6153e517418d48535ab6d8afef&from=research.latest-advancement...
10•natrys•27m ago•2 comments

From MCP to shell: MCP auth flaws enable RCE in Claude Code, Gemini CLI and more

https://verialabs.com/blog/from-mcp-to-shell/
97•stuxf•6h ago•29 comments

YouTube will let users booted for violations of Covid, elections policies rejoin

https://www.offthepress.com/youtube-will-let-users-booted-for-repeated-violations-of-covid-electi...
38•delichon•1h ago•19 comments

consumed.today

https://consumed.today/
97•burkaman•2h ago•22 comments

Always Invite Anna

https://sharif.io/anna-alexei
463•walterbell•5h ago•40 comments

Denmark wants to push through Chat Control

https://netzpolitik.org/2025/internes-protokoll-daenemark-will-chatkontrolle-durchdruecken/
113•Improvement•2h ago•55 comments

Triple Buffering in Rendering APIs

https://www.4rknova.com//blog/2025/09/12/triple-buffering
11•ibobev•3d ago•0 comments

Zip Code Map of the United States

https://engaging-data.com/us-zip-code-map/
72•helle253•6h ago•73 comments

Android users can now use conversational editing in Google Photos

https://blog.google/products/photos/android-conversational-editing-google-photos/
102•meetpateltech•4h ago•91 comments

Mesh: I tried Htmx, then ditched it

https://ajmoon.com/posts/mesh-i-tried-htmx-then-ditched-it
138•alex-moon•9h ago•90 comments

Thundering herd problem: Preventing the stampede

https://distributed-computing-musings.com/2025/08/thundering-herd-problem-preventing-the-stampede/
27•pbardea•21h ago•13 comments

Zinc (YC W14) Is Hiring a Senior Back End Engineer (NYC)

https://app.dover.com/apply/Zinc/4d32fdb9-c3e6-4f84-a4a2-12c80018fe8f/?rs=76643084
1•FriedPickles•9h ago

Structured Outputs in LLMs

https://parthsareen.com/blog.html#sampling.md
185•SamLeBarbare•10h ago•82 comments

Getting More Strategic

https://cate.blog/2025/09/23/getting-more-strategic/
139•gpi•8h ago•19 comments

x402 — An open protocol for internet-native payments

https://www.x402.org/
188•thm•7h ago•112 comments

OpenDataLoader-PDF: An open source tool for structured PDF parsing

https://github.com/opendataloader-project/opendataloader-pdf
77•phobos44•7h ago•19 comments

Restrictions on house sharing by unrelated roommates

https://marginalrevolution.com/marginalrevolution/2025/08/the-war-on-roommates-why-is-sharing-a-h...
269•surprisetalk•7h ago•326 comments

YAML document from hell (2023)

https://ruudvanasseldonk.com/2023/01/11/the-yaml-document-from-hell
184•agvxov•12h ago•118 comments
Open in hackernews

Find SF parking cops

https://walzr.com/sf-parking/
352•alazsengul•3h ago
https://walzr.com/sf-parking/about/

Comments

supportengineer•2h ago
Very well done! Outstanding site, it is clear and easy to use. I supposed you'll be forced offline soon due to legal threats.
jacobolus•2h ago
If the goal is to prevent this kind of thing, it would probably be better to just not put the ticket info online, publicly visible, in real time.
sbarre•2h ago
It looks like this system applied security through obscurity, more or less, though.

I doubt it's the intention of the system to make all tickets "publicly visible" in this way.

I'm not sure we'll legal threats involved (who knows, hopefully not) but I suspect the city will be motivated to find some way to lock down the system to prevent this kind of enumeration attack on their database.

sealthedeal•2h ago
Great job!!
packeted•2h ago
Wow, great work. This is the kind of citizen hackery we need in society :)
lanewinfield•2h ago
another riley walz banger!!!
gala8y•1h ago
Yeah, slowly going through https://walzr.com/. Definitely not his first rodeo.
adolph•55m ago
Worth it for this jpeg:

https://walzr.com/HDR2.jpg

Lammy•2h ago
Love the leaderboard feature. Relevant fee breakdown: https://www.sfmta.com/sites/default/files/reports-and-docume...
simonbolivar•2h ago
Love it! how do you use apple maps on web?
IncreasePosts•2h ago
https://developer.apple.com/documentation/mapkitjs/

If you're a registered apple developer you get like 250k requests/day for free

FinnKuhn•2h ago
You can use "Map Kit JS". You have 250,000 free map views per day, however you need an apple developer account

https://developer.apple.com/documentation/mapkitjs

smith-kyle•2h ago
Amazing!
linehedonist•2h ago
Amazing. Would be even better if it kept everything in Pacific time. A little confusing to see “3 hours ago” just because I’m on the East Coast.
FinnKuhn•2h ago
As someone from Europe I was a bit confused why SF parking cops seemed to only work throughout the night.
pimlottc•1h ago
Ah, I’m in Central, I just assume the data feed was delayed by 2 hours for reason.
throwaway93626•2h ago
I've thought about building something that uses CV to detect parking cops near me, but this is even better! Now just add a paid feature to send alerts when there is a cop within a certain radius of you ;)
mikeodds•2h ago
Thats cool. Would be nice to see annual median take from each warden.
paulsutter•2h ago
Nice to see historical data to show ticket density somehow (different areas have very different enforcement)
enjoylife•2h ago
Officer 0336 is raking it in for the city. I wonder if there is a correlation with the areas which generate a lot of tickets and other city datasets. Perhaps crime rate or average household income?
renewiltord•2h ago
It's just his area street cleaning no? You'll get whacked by that pretty easy. On a different day might be a different guy.
jeffbee•2h ago
It's is amusing that you question whether parking citations correlate with crime rates. The reason they give out tickets for this is that these people have parked unlawfully.
JumpCrisscross•2h ago
Traffic tickets are typically civil, not criminal.
jeffbee•2h ago
[flagged]
JumpCrisscross•2h ago
> So is tax evasion

No.

“In the United States, tax evasion constitutes a crime” [1].

[1] https://www.law.cornell.edu/wex/tax_evasion

jeffbee•2h ago
https://www.law.cornell.edu/uscode/text/26/6663

Moreover: https://www.irs.gov/irm/part25/irm_25-001-006

JumpCrisscross•1h ago
One, yes, the separate charge of civil tax fraud is not tax evasion and is not a crime.

Two, the IRS is a civil agency. It can only bring civil actions, even against alleged crimes. The DOJ, on the other hand, takes criminal referrals. (We tend to see civil siblings to criminal counterparts across our body of law.)

Going back to OP’s question, when people refer to a high-crime neighbourhood, they aren’t talking about parking violations.

jeffbee•1h ago
Yeah, that's my point. It's not a neutral point of view. Unlawfully operating cars is the most widespread and impactful behavior in SF, followed by wage theft, tax fraud, and tenant harassment. And all the other stuff that gets discussed as "crime" is in 4th place or lower.
JumpCrisscross•1h ago
> Unlawfully operating cars is the most widespread and impactful behavior in SF

If you think you can convince your fellow citizens to criminalise parking tickets, go for it. I doubt it has that much support. (But I don’t doubt that confidently!)

lazyasciiart•1h ago
Why is it most impactful?
potato3732842•2h ago
You're not afraid to admit what's marketed as a fine or deterrent is simply a weirdly targeted tax but you're annoyed that it's sometimes avoidable due to only sporadic assessment of it.

IDK what plane this policy spectrum exists on but man is horseshoe theory clearly alive and well on it.

vlovich123•2h ago
Sometimes yes. I've also received tickets from parking enforcement for legal parking and good luck disputing that without getting into a lawsuit. I literally had a ticket issued at a timestamp of when I was on the other side of the city.

So there could easily be secondary correlations between areas filled with people who are willing to fight invalid citations and that might correlate with wealth / crime rates.

enjoylife•2h ago
Officers are a limited resource, so their deployment matters. Are they assigned to areas that most benefit citizens, or those that most benefit the city? Is the focus on maximizing ticket revenue, or addressing the most dangerous violations, like blocked bike lanes? Are they primarily a revenue tool, a public safety measure, or just extra eyes on the street? Do wealthier neighborhoods receive more enforcement, effectively buying themselves safer streets? Basically I'm wondering does parking enforcement benefit SF residents uniformly?
jeffbee•2h ago
Well, if you look at this data, virtually all of the tickets are for leaving your car in a street sweeping zone at the wrong time. So they are functioning as adjuncts of the street sweeping regime. Then you should think about this history of street sweeping in San Francisco. I think you might find that it is the opposite of your preconception. The wealthiest neighborhoods got rid of street sweeping decades ago, specifically because they didn't want to have to move their cars so much.
nerdsniper•2h ago
Different neighborhoods may want different types/amount of enforcement as well. Some neighborhoods may have tiny driveways and are happy that a lot of cars can get away with parking "illegally" due to non-enforcement and put up with the resulting narrow paths where one car has to pull aside to let another car past. Other neighborhoods might have almost no cars ever parked on the street and people get angry if anyone parks in front of "their" curb, even though it's a public street and anyone can "legally" park there.

This kind of difference in desire from area to area should be reflected in municipal codes and have clear signage. But sometimes these neighborhood norms are only reflected in de facto enforcement, not in de jure written legal code.

This has a parallel in the form of HOA's. Most of the justifications I hear for HOA's are that they prevent "$THING_1", "$THING_2", and "$THING_3" ... but all of those are already prohibited by municipal code and can be addressed by making a call to 311. However, citizens of many cities often don't have faith in police / code enforcement to respond with a proper ticket. Sometimes I wonder if all those HOA fees were going to the city if that would pay for diligent non-HOA enforcement.

potato3732842•2h ago
You'd really be up shit creek if parking illegally were a crime because there are all sorts of protections afforded to those accused of crimes not afforded to those accused of parking violations.
jonas21•2h ago
You'll probably find a high correlation with the street cleaning dataset (if there is one). Nearly all of the tickets at the top of the leaderboard are street sweeping violations.

I wonder if street cleaning is net profitable for the city once you factor in tickets. That would make cutting the cleaning frequency [1] a doubly bad idea.

[1] https://sfstandard.com/2025/02/18/san-francisco-city-hall-st...

renewiltord•2h ago
Cool app! What a pity. I wish we had more of them here in SOMA. Big open void.
dheera•2h ago
Need to pair this with an API for Tesla FSD so that cars just move themselves automatically
spankalee•2h ago
Or just pay the very reasonable fee for storing your private property on public land.
dheera•2h ago
I'm fine with paying the fee but

(a) It should be automatic -- if they have the tech to enforce parking like a witch hunt, they should have the tech to just charge people for parking automatically just like Fastrak and everything else. Just have parking meters look for a Fastrak transponder and charge that account for parking, and also automatically send texts to the phone number and e-mail associated with the Fastrak account if time limit is reached. Make the city a good UX. Parking payment should be a zero-effort operation. I shouldn't have to make a wager on how many minutes I'm going to take to finish my meal and risk wagering too many minutes (overpaid) or too little (get fined). Just charge me according to my actual usage.

(b) Parking signs are too goddamn hard to parse, that's the real problem.

CalRobert•2h ago
Believe it or not, parking reformists tend to agree! The fact we even have a parking "fine" indicates that it isn't really priced right; if you park somewhere you should just pay the market rate for doing so, whether it's for 30 minutes or 30 days.

The legendary Donald Shoup (who sadly died this year) https://www.shoupdogg.com/ - writes about this in The High Cost of Free Parking

avidiax•2h ago
Every time I drive in SF, I pay for parking, and then get a parking ticket.

Apparently I'm supposed to know that a red parking meter is for trucks. The "trucks-only sign", if there was even supposed to be one, wasn't attached to that meter or the parking sign.

The other time I was the first to arrive on a block, and paid the wrong meter out of confusion.

Ancapistani•1h ago
> (b) Parking signs are too goddamn hard to parse, that's the real problem.

Product idea: a smartphone app that uses your GPS location to tell you how many tickets have been given at a specific location, how recently, and the day/time distribution.

Then pair that with an AI model that's trained on the signage to be able to parse what it says, and I bet you could very accurately predict whether a given spot is at risk of getting you a ticket.

prepend•2h ago
Clever how you figured out the pattern in ticket numbers and how they relate to individual officers.
ceayo•2h ago
Nice apple-like design, looks really good! Especially those three dots in the top-left.
pj_mukh•2h ago
Part of me says, “What a clever hack! Can I get a notification feature wrt where I parked?”

The other part of me says “Can we just use Public goods more responsibly instead of scratching and clawing our way through maximizing every second of monopolizing public spaces for our personal property storage”

spankalee•2h ago

    > $158
    > 99 Grove St
    > 10:43 AM • Truck
    > Blocking bike lane
Thank you, Officer 0227!
jakelazaroff•2h ago
Wish we had officers like that in NYC :,)
jermaustin1•2h ago
They're too busy parking in bike lanes.
koakuma-chan•1h ago
Grove Street, home
MontagFTB•2h ago
This is amazing. Can we get a heat map of ticket disbursements?
spankalee•2h ago
Hopefully the city already has that, ideally correlated with the coverage from GPS on the officers' cars or devices.

Then they could see where they're under-patrolling and adjust their routes to fill in the gaps.

fnord77•2h ago
Is this real time? I don't see anything moving.
baggy_trough•2h ago
What would really be incredible would be if the city made this kind of data public intentionally.
jer0me•2h ago
They do! There's a data set, updated daily: https://data.sfgov.org/Transportation/SFMTA-Parking-Citation...

It currently has 22 million parking tickets dating back to 2008.

baggy_trough•1h ago
Incredible!
Ancapistani•1h ago
Huh - I don't know if I like those data being available in that format. I feel like they could probably split it up so specific plates aren't available to the public alongside the lat/long.

As it is, it would likely be an effective way to track someone's routines. All you need is a license plate and you can likely get a list of many places they've been since 2008. That's especially true since it includes citations for things like street cleaning violations, which in my experience most people will get at least once when living somewhere. I bet a lot of those plates can be tied to at least the block the owner resides with this dataset.

khuey•2h ago
I'd be interested in a "loserboard", i.e. who consistently writes the fewest tickets.
jakelazaroff•2h ago
The loserboard I'd be interested in is which license plates consistently receive the most tickets.
throwaway93626•2h ago
I'd guess the top spots are just super wealthy people who figure that at their "hourly rate", paying for parking is basically more costly than just eating the tickets. Like if someone's time is worth $10k+/hour, the parking tickets are basically just premium parking fees that are still "cheaper" than spending even a minute dealing with payment... Let your assistant pay whatever tickets you get in the mail instead.
edm0nd•25m ago
This was our old CFO.

He would park directly in front of our office building that was located inside a large complex that had a movie theater, fancy restaurants, and all kinda stuffs like that.

They couldnt tow so they would just write a ticket for being in the spot after like 60 minutes. He racked up thousands in tickets and simply just didnt pay them. Never got in trouble either lol. Since it was private property, I guess the owners just didnt care that much. He was a super douche and ended up quitting thankfully.

creddit•23m ago
They are definitely people who live in their cars and don’t pay the tickets.

EDIT: did a search to see if anyone had analyzed this and here’s reporting that shows basically this. None of the top cars are remotely luxury, eg.

https://sfstandard.com/2024/04/15/parking-tickets-san-franci...

smegma2•1h ago
It exists: https://www.sfmta.com/media/9654/download?inline
khuey•1h ago
This appears to be a list of overpayments they haven't been able to refund, not a ranking of total fines to any given plate.
whiplash451•2h ago
The reverse engineer of the ID system is worth its pound of google riddle. Well done.
spankalee•2h ago
It would be great to see more automatic payment and enforcement. It's great that buses can issue tickets for blocking bus lanes, but I would absolutely love for their to be more automatic enforcement of blocking bike lanes and meter violations.

I'm not in SF a lot these days, but I have noticed some particularly fancy parking meters that at least have tap-to-pay and might have more. Instead of a ticket, you should just be charged for how long you stay. And instead of a strict time limit, just raise the rates the longer you parks.

aidenn0•2h ago
Is it illegal to block bike lanes in SF? I ask because it is not illegal to do so in California, according to the learner's permit test my daughter recently took.
scottbez1•1h ago
The DMV is unfortunately wrong about this, with an invalid interpretation of CVC - the DMV handbook is NOT the law (it's a simplistic layman's interpretation), and is not a valid legal defense.

That said, in SF proper it's absolutely inarguably illegal as a violation called "Obstructing traffic" in the SF transportation code. A bike lane is an active travel lane for vehicles as defined under the CVC (including bicycles), and therefore stopping in one is illegal just like stopping in a car lane. I've had drivers cited for this in the past.

rahimnathwani•1h ago

  I've had drivers cited for this in the past.
I'm curious how you've managed to achieve this?

I haven't found SF311 very responsive to requests related to illegal parking. Even if they respond, wouldn't the car be gone by the time they show up?

scottbez1•1h ago
Yeah, they ignore SF311 reports by policy. I've managed it by flagging down an amazingly helpful parking control officer that happened to be in the area, or else by calling and reporting an obstruction of traffic (not mentioning the bike lane) and then waiting until the PCO arrived and talking to them.

The officers have almost always been helpful, but I think they generally tend towards lower confrontation and more "efficient" violations like street sweeping or expired meters by default (or perhaps directed by management).

rahimnathwani•1h ago

  by calling and reporting an obstruction of traffic
Would you be able to share the rough process, and how long it usually takes?

e.g.

- Do you call 311 or a different number?

- How soon have you had someone arrive at the scene?

hedora•1h ago
I read the driver’s manual a few years ago.

Fun fact: If there’s a bus or trolley car picking up passengers at the curb, you must pass it on the right in CA.

I’m almost tempted to try it when there’s no one but a cop around, and then hand the book to them when they pull me over for driving on the sidewalk.

voxic11•1h ago
I don't think needing to pass on the right is a defense against driving on the sidewalk. I think it just implies that you cannot pass while they are picking up passengers.
gruez•29m ago
Yeah I think the intention is to prevent someone who disembarked from the bus and are then crossing the street from getting mowed down by a car overtaking from the bus's left. It's similar to why you can't pass a school bus when it has its stop sign out.
tjohns•1h ago
If so, then the DMV test is (presumably) wrong. California Vehicle Code §21211 says it's generally illegal to block a bike lane:

"No person may place or park any bicycle, vehicle, or any other object upon any bikeway or bicycle path or trail, as specified in subdivision (a), which impedes or blocks the normal and reasonable movement of any bicyclist unless the placement or parking is necessary for safe operation or is otherwise in compliance with the law."

https://codes.findlaw.com/ca/vehicle-code/veh-sect-21211/

CVC §21209 says that you can park in a bike lane only if parking is otherwise permitted (e.g. it's a marked parking spot).

https://codes.findlaw.com/ca/vehicle-code/veh-sect-21209/

SF city code also lists it as a separate parking infraction: https://codelibrary.amlegal.com/codes/san_francisco/latest/s...

Checking the DMV handbook, their description is similar. They say "it is illegal to drive in a bicycle lane unless you are parking (where permitted)" - plus turning or entering/exiting the road. [Source: CA Driver's Handbook, pp. 17, emphasis mine]

aidenn0•26m ago
Note that 21209 does not say "otherwise permitted" but "permitted." One interpratation (perhaps what the DMV is using) is that, since curb parking is generally permitted, parking in a bike lane that abuts the curb would also be generally permitted.

The city I live in put up "no parking in bike lane" signs everywhere, presumably to address this ambiguity.

FWIW the DMV test question was bad in other ways; it was a multiple choice asking "Which of these is not an illegal place to park:" with the correct answer being "in a bike lane." My daughter got it wrong not just because of not knowing the answer, but also because the double-negative confused her.

potato3732842•2h ago
You only love it because you have some perverted dream of 100% enforcement of whatever your rules are. In reality automated enforcement would cause an uproar and the rules would be changed to accommodate the status quo.
echelon•2h ago
> some perverted dream of 100% enforcement

No illegally parked vehicles?

The negative externalities of illegally parked vehicles charged to the source?

I'll dream of that.

hedora•1h ago
I think you’ll find this leads to infinite fine revenue and higher congestion in pretty much all cities.
JumpCrisscross•1h ago
> think you’ll find this leads to infinite fine revenue and higher congestion in pretty much all cities

How? Laffer curve will max out as behaviour adjusts. And that adjustment means folks parking legally or forgoing a car or the area in question, not driving around in circles for fun.

potato3732842•1h ago
That doesn't change the fact that the laws/rules/etc across all sorts of issues are all written half baked with the assumption that enforcers will be reasonable and all sorts of edge cases don't need to be supported.

The reason illegally parked vehicles are illegal is not because they are illegal, that's circular and the peddlers of that sort of logic should be derided if not marginalized. We care about illegally parked vehicles, littering, and all manner of public nuisances because of the downside to the public of said nuisance. Absent the downside there is no reason to care. And if you automate perfect enforcement you will be inundated with tickets for situations that lack downsides that the enforcers were mostly ignoring.

JumpCrisscross•1h ago
> doesn't change the fact that the laws/rules/etc across all sorts of issues are all written half baked

Illegal parking is pretty black and white. I wouldn’t support citizen policing for all violations. But parking seems like a good fit.

ruggeri•47m ago
I believe you are being downvoted because your comment violates the guidelines ("Be kind. Don't be snarky. Converse curiously... Edit out swipes."); anyway, that's why I downvoted.

Your later comment that enforcement might benefit from latitude to be reasonable and accommodate nuance is not invalid, and you could have just said that rather than call the gp's aspiration "perverted." The expressed norm of guidelines is that your belief that the gp's logic is circular does not justify your derision.

Anyway, you will probably be more convincing to others by being less insulting.

If you don't want to contribute in adherence to the guidelines, what is the point of posting here at all?

83542769854276•40m ago
Spoken like a criminal, carbrained cunt that thinks he's entitled to public space because he's too lazy to follow the law.
Rebelgecko•40m ago
There's pilot programs to let busses self-enforce their lanes. No uproar I've seen, most people are supportive.
knowitnone3•1h ago
In some cities, citizens can take pictures and initiate fines when they see a violation.
jimmyl02•2h ago
This is super fun! The apple maps look for the "Find My" feel was a really nice touch
jshchnz•2h ago
this guy never misses
creddit•2h ago
Oh man this is so fun but I slightly hate it. It probably won’t help people avoid parking enforcement much but it could somewhat which sucks because I think parking enforcement is a very good thing.

More, I worry about the chance a deranged person uses it to track a specific SFMTA agent who gave them a ticket.

apavlinovic•2h ago
This works and feels amazing. How are you doing the swipe up panel?
poorman•2h ago
Someone should plot this on a heat map so we can see what areas the parking cops don't write tickets for!
kami8845•2h ago
Amazing to see the scale of it. As a piece of feedback my assumption is that different officers are assigned to different areas and so since street sweeping is either the first and third or second and fourth week of the month for most residential areas, this will allow different officers to float to the top in different weeks. Having at least a 2 week lookback for the leaderboard is probably best. Otherwise great work!
Swizec•25m ago
> street sweeping is either the first and third or second and fourth week of the month for most residential areas

On my block we get it 2x/week. I've never seen a street sweeper come by and the street is always dirty, but I sure have gotten tickets for leaving my vehicle out front overnight on the wrong day.

obblekk•2h ago
This is awesome. Coolest hacker demo I've seen in a while.
scottbez1•2h ago
Incredible work. I'm disappointed to see so many of the leaderboard items are street cleaning tickets.

I get it - street cleaning are "easy" tickets to write in bulk, and therefore efficient ROI for PCO time, but they're not the most important violations to cite compared to safety-critical things like blocked bike lanes (which SFMTA has an official policy to completely ignore citizen reports thereof), double-parking, or red zone (including daylighting) violations.

Part of the issue is improper fine structure (though I think this is at least partly controlled by the state?) - tickets for blocking a bike lane are rarely written and therefore it's a good bet to just do it and odds are in aggregate it's cheaper than paying for parking legally.

UPS, FedEx, Amazon, Uber etc rely on this as a cheap cost of doing business, externalizing their costs onto the safety of the public. SFMTA even offers bulk payment discounts to UPS, when they should be charging escalating fines for repeat offenders.

potato3732842•1h ago
>Incredible work. I'm disappointed to see so many of the leaderboard items are street cleaning tickets.

Why wouldn't it be? It's basically spawn camping or deer baiting or shooting fish in a barrel or whatever analogy you want to use.

scottbez1•1h ago
Agreed, and it provides important revenue for transportation projects and helps keep our streets clean so I wouldn't want SFMTA to adjust that focus as-is.

I just wish we had proper (read: higher, accounting for real negative externalities and likelihood of citation) fines for other violations that pose active public safety concerns such that SFMTA would be incentivized to also focus on those and not just the "easy" ones. It would also disincentivize antisocial behavior by repeat offenders.

hahahacorn•1h ago
On principle, I agree.

In practice, delivery vehicles don't have a place to safely stop, because that space is allocated to free street parking for private vehicles.

Subsidized street parking for cars are externalizing their costs onto UPS/Fedex/Amazon, etc. who are then passing that cost along to the safety of the public.

scottbez1•1h ago
Yep! Market rate for private parking, and offering subsidized short-term commercial parking (which generally has broader societal benefit than private parking) with appropriate safeguards for abuse would be great!
bahmboo•1h ago
Where should the delivery trucks park if there is no infrastructure for them and the public has an ever increasing appetite for delivered products? Try to think about it from the delivery drivers point of view and their safety. The roads are not any one users exclusive resource. We all pay for them and they must be shared.
andrepd•1h ago
Bike lanes reduce the number of cars on the road and therefore make it easier for vehicles that are actually necessary (delivery, work, emergency, etc) to travel and park, not harder. So do all viable alternatives to driving. That in 2025 people still unironically say "just one more lane bro, and we'll solve traffic" is almost unbelievable.
bahmboo•1h ago
Ok. I understand bike lanes. I didn't say anything about more lanes, bro. I am talking about delivery vehicles and the challenges they face in urban environments. Keep in mind that a delivery driver can spend as much time on foot as they do in their vehicle. This means interacting with vehicles and bikes as a laden pedestrian. They are compromised and it can be dangerous.
scottbez1•1h ago
In commercial loading zones! We've allocated the color yellow for this in SF.

If commercial drivers petitioned SFMTA to convert more private parking spaces into commercial zones I'd be signing petitions and backing them in their goal 100% of the way.

But generally I've found that commercial drivers would rather just violate the law and endanger others rather than engaging in activism for better infrastructure on our streets, so it's hard to feel sorry for them if they're cited and fined as a result.

bahmboo•41m ago
I can't speak for SF I'm in Seattle. I don't think it is incumbent on delivery drivers to do activism for their employers. That's my opinion. And I still don't understand why people don't see that the delivery driver on foot is a vulnerable user of the roads and sidewalks. We aren't perfect but we are there for the public not because we like it.

Someone else mentioned "externalizing" the cost of parking via citations. Those are expensive and a trove for the city. That sounds more like subsidising than externalizing.

As far as feeling sorry for "them" - that is a disconcerting view of a servant class.

primitivesuave•2h ago
I did a fascinating analysis of SFMTA data a few years back. They posted a public list of names and license plates [1] that they refuse to take down, despite many emails from me over the years. I found a particular license plate that belonged to a plumber with an impeccable 5 star reputation on Yelp, whose business in SF was effectively ended by street sweeping fines. He accidentally paid the same ticket twice, which resulted in his work vehicle being towed for excessive delinquency on the original ticket, which culminated in him moving his plumbing business to Utah.

I mentioned his 5 star reputation because several people got on Yelp over the years and described situations where he wouldn't even charge them money if he could fix something in a few minutes. It was very sad to learn how the SFTMA ran an honest plumber out of our city, and still won't take his name down off the list below (even 8 years after the deadline to respond).

I don't mean to draw undue attention to that list - please bombard the SFTMA with emails to take it down, it is a very obvious invasion of privacy and laughably unnecessary.

1. https://www.sfmta.com/reports/escheatment-posting-october-20...

hn_throw_250915•2h ago
Reading this comment I’m stumped as to what SF can learn from this. There’s a lesson in there somewhere but I have no idea what it could be.

Oh well.

https://m.youtube.com/shorts/fBoqMMPoU9k

ronsor•1h ago
> street sweeping fines

Why the hell does SF need to sweep the streets so much?

mmmlinux•1h ago
From all the trash that everyone leaves everywhere. and broken glass from car windows getting smashed in. its not a nice place.
scottbez1•1h ago
Generally to keep streets safe to drive on, and pleasant to live near.

In particular, SF receives very little rainfall for most of the year, which means that leaves and debris easily accumulate rather than being washed away at regular intervals.

Drivers also have a tendency to leave parts of their vehicles - like broken glass and plastic/metal shards - behind when they routinely crash into each other, which accumulate on the street. Without regular sweeping, those can pose hazards to other drivers and bicyclists, and risk being washed into the bay via storm drains if not swept.

creer•55m ago
> Why the hell does SF need to sweep the streets so much?

It does not. All the way to street sweepers zooming down the street at full speed. All the way to NOT cleaning the street before a major event. All the way to ticketing people for a specific "street sweeping" time period but zooming down the middle of the street hours later when parked cars are back. San Francisco street and sidewalks are disgusting and it's their normal condition.

What it is, is a convenient way to write lots of tickets in not much time - as mentioned all over this discussion.

arjie•18m ago
I have a video from a street I used to live on that might illustrate what happens in between cleanings (you'll have to turn the camera view down to face the curb to see): https://youtu.be/ew4fMB7OIyo?t=8

I think at the time the video was taken the red car had been there a while.

The video is not very high-resolution admittedly, but you can gather how things go. If you'd like, here's a screen grab https://imgur.com/a/YTymus3

Arch-TK•1h ago
I'm curious, how did his name being on this list significantly affect his business?

I live in a different country and I can't imagine checking the "traffic fine registry PDF on a random government website" when considering which plumber to hire.

I don't doubt that this caused him problems, I'm just trying to understand how.

scottbez1•1h ago
It caused him problems because he didn't think the law applied to him, and got charged a lot of fines due to those violations.

Incurring higher costs than revenue is a common cause of business failures.

brewdad•1h ago
More likely is he paid a ticket incorrectly. Someone said he paid the same ticket twice instead of paying each ticket once. Then the city racked up delinquency fines while making little to no effort to inform him of these fines or the outstanding ticket. One day, he gets towed and can't get his van back until thousands of dollars in fines and penalties are paid from a ticket that he thought had been taken care of long ago.
primitivesuave•1h ago
I should have clarified - I only found his business through that list because I noticed his vanity license plate HPPYPPS, which corresponded to a business named Happy Pipes Plumbing which I subsequently found on Yelp.

Also, I found out about his van getting towed because I scraped towing records from Autoreturn (the city's main towing provider - lots of corruption around that deal). Autoreturn's website at the time had a query parameter like "?towid=1", so you could increment that to pull all towing records.

I started working on a pretty in-depth data analysis and visualization, similar to what was done here, but I got caught up with my day job and some rock climbing dreams. I handed over all my research to a few local reporters a while back - they were really excited to talk to me in person about it, but I haven't seen anything published since.

knowitnone3•1h ago
I don't understand or this makes no sense. If he paid the ticket twice, shouldn't SFTMA own him money? Why was it delinquent if he paid twice? Something does not add up in this story.
echoangle•1h ago
I think he got two tickets but paid one of them twice and forgot to pay the other one.
primitivesuave•53m ago
Just to confirm, this is what happened - he paid one twice, and therefore the other became delinquent. However, if you file a FOIA request with the SFMTA and do some basic analysis on how much is "owed per license plate", you will see that certain license plates have been allowed to accrue tens of thousands of dollars in parking fines with virtually no towing repercussions, going back as far as data is available (2013). Around 80-90% of these vehicles are rental cars, around 5-8% of them are commercial trucking companies which absorb the cost of 2 tickets per day, and this tiny 1% of license plates are effectively "lawless parkers" who drive high-end cars and accrue tens of thousands of dollars in unpaid parking fines every year.
RyanOD•2h ago
Where I live, many people park at intersections right up to the curb making it almost impossible to see oncoming traffic from the right or left. Really scary when you have a 16-year old driver you're trying to keep safe.

There is a very real reason why most intersections require drivers to park 20-30 feet away. Please think of the safety of others and adhere to this rule.

vhcr•1h ago
This is solved with better infrastructure.

https://en.wikipedia.org/wiki/Curb_extension

RyanOD•1h ago
Yes, I've seen some of this. While it certainly helps, it seems like a waste of limited resources. Why can't some people just follow such a simple rule?
Dylan16807•1h ago
Waste of what resources?

If anything I'd expect the sidewalk to be cheaper.

godelski•1h ago
There's a difference between starting from scratch and modifying existing infrastructure
Dylan16807•59m ago
There is.

But the post saying it's a better method isn't suggesting extra labor to do modifications. That's useful just as pure knowledge, and also it can be applied into future designs or when parts of the road wear out.

RyanOD•53m ago
In Seattle, I've mostly seen approaches such as this as a modification. Though I see your point in a new construction situation.
goopypoop•1h ago
the picture on that article looks like a nice stripy parking space
Dylan16807•1h ago
A car could push into the first third of it, but visibility would be fine in that case. Trying to use the whole thing in a car would mean you're jutting into the traffic lane, and anyone willing to do that is causing bigger problems. And if a bike parks in the stripes that's fine for visibility too.
godelski•1h ago
Great solution but until then I think the gp's point still stands.

We as humans need to ensure our actions are done with care are forethought. You can't control others but you can control yourself and influence others (like this comment attempts to do)

Plus, it's a lot cheaper for all of us if we don't need to constantly redesign once someone figures out how to "beat the game" (see Goodhart's Law). We're social creatures and the Tragedy of the Commons is a much more common occurrence than people think, especially in large cities.

Our actions affect others.

knowitnone3•1h ago
This is now illegal in some states
rahimnathwani•1h ago
It's illegal in California but in San Francisco official policy is to not enforce this law.

If there's no red paint on the curb, they won't ticket you.

This is official policy:

https://www.sfmta.com/blog/making-enforcement-fair-our-new-p...

gboss•1h ago
It makes sense. It was ridiculous that they were originally proposing ticketing people without there being signage that it was illegal to park there. They need to just paint the curbs.
scottbez1•1h ago
Is it ridiculous to ticket someone who parks in the middle of Market St if there's no sign that it's illegal?

No. Driving a car is a privilege, and a dangerous one at that, which requires a competency test. It is not unreasonable to expect licensed drivers to know the statewide laws that govern that privilege without reminder signs.

tossandthrow•1h ago
While I agree on this, the US is a bit special as having a car is considered mandatory.

IMHO, that culture needs to be changed: better public transport and walkable cities.

When that is established, then it is also easier to revoke the drivers privilege.

renewiltord•1h ago
Having a car in SF is not mandatory. It's quite useful but you can live well without.
rahimnathwani•53m ago

  you can live well without
Imagine you and your spouse both work full time, and you have 1-2 children. And your definition of 'living well' includes having those children learn to swim well, and do some sort of after-school sport, and also do math supplementation because SFUSD teaches math at a really slow pace.

I don't believe any of the above are outlier or unreasonable positions to have.

Yet a family in that situation would severely struggle to fit everything in if they had to rely solely on public transport to get between home, school and after-school activities.

(I grew up in London, where public transport is often faster than driving. In San Francisco, most of my car journeys would take 3-4 times as long by public transport.)

scottbez1•1h ago
In some ways, yes, though not in many cities like SF, NYC, Chicago, Seattle, etc.

But it's also a chicken and egg problem: often transit is not viable or is too slow precisely because everything is devoted to cars. The SF Van Ness BRT is an excellent example - I used to routinely get off the 49 bus and walk faster than it stuck in car traffic, but after the BRT the bus is a much better and faster experience than driving could ever be.

One of the most common reasons for watering down or canceling pedestrian, transit, and biking infra projects is a refusal to negatively impact driving in any way, even if the net societal benefit (especially to lower income households who take transit at much higher rates) is far greater.

Good governance requires sometimes unpopular choices (see Paris's recent bicycle transformation, or SF's recent recall election over the creation of a new public park in place of a redundant street)

tanseydavid•1h ago
>> Is it ridiculous to ticket someone who parks in the middle of Market St if there's no sign that it's illegal?

I saw someone just parked in the right lane (of two) heading up California street at maybe Mason. Just sitting there reading a book. <!>

rahimnathwani•1h ago
The law has been widely communicated.

You could argue that people cannot be expected to carry tape measures with them, because their glove compartments are too small.

But the difficulty of judging the distance from the intersection is a factor in a minority of cases.

SFMTA could have chosen to enforce the law but allow a tolerance of 5 feet. That would start providing safety benefits earlier without surprising any driver who made an honest mistake in their estimate of the distance.

whakim•1h ago
Why? Having a driver's license is a privilege that requires you to study and know the rules of the road. The onus is on you to know the rules.
jfim•1h ago
There are also international tourists who may have different local parking rules than the ones in SF. Having clear demarcations between allowed and non allowed parking areas makes it easier for everyone to follow the correct rules.
adolph•59m ago
Do you have an rss feed of road rules piped into Anki cards or what?

Or just maybe "driver's license is a privilege that requires you to study and know the rules of the road" is a fallacious claim that rests on pedantic legal formalism and an impoverished sense of human psychology.

izacus•44m ago
How bizarre, this rule is enforced across most of EU without signage and somehow most people cope. Why wouldn't Americans?
brewdad•1h ago
Portland does the same thing since most blocks in the older parts of town are 200 feet. Reserving 20 feet at either end would take away a huge chunk of street parking in residential areas built before driveways were common.

It's also why our light rail trains can only be two cars long.

RyanOD•1h ago
Yes, it is illegal in Washington state and yet, people do it.

Specifically, drivers who are "just running in" to grab a coffee or a pizza or whatever. What they don't understand is even a limited amount of time blocking the view of drivers can be catastrophic.

Parking up to the corner of an intersection is just a really dangerous, selfish thing to do.

pfannkuchen•1h ago
Hasn’t this been illegal in all states since the beginning of traffic laws?
buckle8017•1h ago
This rule removed something like 10% of all parking spaces in SF.
kenmacd•2h ago
+11 and +4 seem check-digit-y

From the limited dataset it looks the last digit comes from:

last digit = (<sum of previous the digits> + 2) mod 7

jonahx•1h ago
What's funny is secure IDs could have easily prevented this but, even if the city discovers it and wants to shut it down now, I'd bet actually fixing the system would be too costly (IDs tend to couple to everything).
mulmen•1h ago
Just add a delay.
odensc•1h ago
Pretty simple fix: require more data to look up a citation, like the number, issue date and plate/VIN (this is how my city does it). Technically doesn't make the scraping impossible if you wanna try every permutation of a license plate, but makes it mostly infeasible.

Currently it just requires the sequential citation number [1], which is how the data is being scraped so easily.

[1]: https://wmq.etimspayments.com/pbw/include/sanfrancisco/input...

edm0nd•27m ago
super easy fix

just update all the tickets at the end of the day in one single batch / put time delay on the data

renders the site useless instantly

dcreater•1h ago
wow, great work. But is this legal? Feels like no and will be takendown
Supercompressor•1h ago
FYI the ticketing time is showing incorrectly out of Pacific time, e.g. here in Eastern all recent activity shows as 3 hours ago. Not a big deal as almost all users would be in Pacific, but wanted to mention.

Great work though, this is rad.

jonny_eh•1h ago
Probably a good time to tell people that SF operates a "Text Before Tow Program" where you can get a warning that you're about to get towed: https://www.sfmta.com/text-tow-program
ihaveajob•39m ago
This is fantastic. It really signals that the point is not to get money from you, but to free up the parking spot.
sedatk•25m ago
> This service only applies to parking more than 72-hours, blocked driveway, construction, and temporary no-parking (special event or moving truck) zones. Peak-hour tow-away lanes, hazards, yellow or white zones and other violations are not included.

Still great though. That would have saved me $500 6 years ago.

truncate•18m ago
>> A tow truck will be dispatched in conjunction with the text message notification and could be there in as few as five minutes.

If only they operate in good faith, and that is something I'd highly doubt given its SFMTA. As in they could call tow truck ahead of time, so that its almost unlikely the person will be able to get to their car in time.

dinkblam•1h ago
can you find out how much revenue the city makes each week with those tickets?
primitivesuave•47m ago
No - you would have to file a FOIA request with the SFMTA, and then tabulate the "Total Paid" column in the response files. Below is my FOIA request template for the SFMTA [1] to assist anyone who is interested in doing this.

> Please provide all possible information on all parking citations issued between 2009 and the present day. This should include any information related to the car (make, etc), license plate, ticket, ticketer, ticket reason(s), financial information (paid, etc), court information (contested, etc), situational (eg, time, location), and photos/videos. Specifically, please provide the most recent data from the dataset I have received in past FOIA requests, with the following headers:

> Issue Year, Ticket Number, Tick Issue Date, Tick Issue Time, Agency, Tick Badge Issued, Veh Make, Veh Body, Tick VIN, Tick RP State, Tick RP Plate, Plate Exp Date, Violation, Violation Desc, Tick Meter, Tick Street No, Tick Street Name, Suspend Code, Suspend Desc, Tick Suspend Date, Tick Dispo Code, Tick Dispo Desc, Tick Dispo Date Total Paid, Total Amt Due

1. https://www.sfmta.com/public-records-requests

1zael•1h ago
I'm missing something here. How did you get the dataset for this? And that too, in real-time?
rrrrrrrrrrrryan•1h ago
https://walzr.com/sf-parking/about/
1zael•1h ago
ahh thank you!
k8sToGo•1h ago
Explained here

https://walzr.com/sf-parking/about/

1zael•1h ago
ahh thank you!
vanshg•1h ago
Explained here: https://walzr.com/sf-parking/about/
assemmedhat•1h ago
Awesome. The leading officer in the dashboard should have a raise :)
alexchantavy•1h ago
Oh wow this is from the same author as https://walzr.com/bop-spotter -- love these projects
rconti•1h ago
I knew that domain name (which is blocked at work, for some reason) sounded familiar.

So wait.

cop-spotter is brought to you by the people who brought you bop-spotter?

barbazoo•55m ago
Odd detail about the page, on the left it says "Audio feed courtesy of Orchestra" but the link goes to some dystopian panopticon kinda surveillance app.
hundchenkatze•12m ago
I think they're being cheeky. I assume Orchestra is the dystopian company providing the "ShotSpotter" service to SF, and bop spotter is piggy backing on the api.
galaxy_gas•7m ago
They are separate dystopian that have public video and audio feed of SF on front page 4K

Shotspotter not related co.

Ancapistani•1h ago
This is kinda taking me aback a bit :).

I live in a small town (<15k), with the nearest city of 100k people or more several hours away. Having this degree of detail and low latency is impressive.

I happen to be in SF right now on business, and walked outside. There was an officer about a block away, right where the map said they were ~10m ago.

smurda•1h ago
This is why the internet and HN should exist <3
Simulacra•1h ago
Fascinating and good to see enforcement actually occuring
thatguymike•1h ago
This is great. Watch them take the data down in 3, 2, 1...

Until then I'd love to see trails of where the traffic enforcers have been on the main map, it would make the map more engaging.

ProofHouse•55m ago
Can the city just keep the top five and fire the rest, you know tax savings lol although I’d get a parking ticket, surely
hobofan•45m ago
Not sure if there are any tax savings to be had. Even the 100th place on the leaderboard netted $2k in a half day of working, so I think every single one of them may provide positive income for the city.
hnav•22m ago
traffic enforcement is pretty much the only cashflow positive city business
neilv•47m ago
Let's say that some people are opposed to the city's enforcement of parking rules against them (people who don't want parking tickets for overstaying in a spot, nor parking somewhere they aren't supposed to).

Let's also say that some other people support the enforcement against that first group (e.g., small brick&mortar businesses, and people who want more parking available for quick errands).

If the Opposed group uses big data to work around the enforcement, does that hurt the Supports group?

What's fair in that situation?

Brian_K_White•43m ago
Who used big data first, who uses big data more, who has more big data to work with, who has big data they get to keep to themselves and who has to work with only big data that both have the same access to?

F this supposed see the other side question.

bko•40m ago
San Francisco has a system for reporting parking violations. Residents can report illegal parking such as blocked driveways, sidewalk obstructions, double parking, and abandoned vehicles through the city’s SF311 platform.

You can make a report on the 311 website, mobile app, or by calling 311. You receive a tracking number to monitor the response.

https://www.sf.gov/departments--311-customer-service-center

threatofrain•35m ago
Opposition must come through legal means, because the cheapness and omnipresence of enforcement is only getting better, especially for SFPD on the tech front.
appreciatorBus•28m ago
Just charge market rates for land.

Overstaying (aka overconsumption) is mostly just a predictable consequence of selling something valuable at far below what its value.

nick49488171•13m ago
Ah yes, the free market, which tends to always work in favor of the majority of people and common good.
davmre•9m ago
Even if you charge $10/hr, or whatever the market rate would be for street parking spots, you still need an enforcement mechanism to prevent people overstaying.

In general, the idea of a "market rate" for any given property depends fundamentally on a system of property rights actually being enforced.

morkalork•26m ago
Hey @OP, make a leader board for the license plate with the most infractions
obventio56•24m ago
I would pay ~$10/month for email alerts when an officer is within a geofence of my car.
ThePowerOfFuet•20m ago
Then someone will know where your car is at all times, and probably who you are... and that is monetizable (not from you).
Zigurd•15m ago
Google maps is free to use so obviously I'm the product Google sells. I'd say I'm getting a fair deal letting "them" track my location. (Why does nobody ever complain about them insisting on gender neutral pronouns? They must be very powerful.)
jaggederest•12m ago
If you do not believe that is already true on multiple axes, you are probably mistaken. The combination of automated license plate scanners, phone beacon data, and behavioral metrics make that relatively straightforward to get, in aggregate.

I worked on a project where we could tell how many users were in a given store at a time (historically, not realtime) based on wifi traces, mobile data aggregation from carriers, and bluetooth pings. We could generally back it up to even general demographic data like how much disposable income the users were likely to have. Interesting project, deeply worrying how much data is running around out there.

obventio56•9m ago
If there is someone who wants this data, I am happy to sell... no need for a middle man.
giarc•8m ago
Officer 0438 appears to have begun his shift in Guadalajara

https://imgur.com/a/u4hg8DS

nycdatasci•4m ago
How are you handling the auth token/captcha on the website? I'm not a legal expert, but my impression is that automated solving of captchas during a scrape carries higher risk. That said, amazing project!