San Francisco prankster built a real-time parking cop tracker and the city had to scramble to shut it down

A prankster from San Francisco built a real-time parking cop tracker, which was great news for local drivers, but not so great for the city’s administration.

For a few glorious hours, San Franciscan drivers felt like they had unlocked a cheat code for street parking in one of America’s toughest cities.

A 23-year-old software engineer turned public data into a live map showing where parking enforcement officers had just issued tickets.

The internet loved it, but the city certainly didn’t.

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The prankster who built a real-time parking cop tracker

The mastermind behind the chaos was Riley Walz, a young tech engineer known for playful internet experiments.

His site, widely referred to as a parking cop tracker, pulled from publicly available San Francisco Municipal Transportation Agency data and translated it into something drivers could instantly understand.

Using citation data, the app displayed officers’ initials and plotted the approximate location of their most recent tickets on a live map.

It also showed stats like how many tickets had been written, giving users a surprisingly detailed snapshot of enforcement patterns across the city.

It even included a leaderboard with the traffic cops who’d given out the most tickets sitting at the top.

Walz described the project as a creative use of open data, built to highlight how much information is already out there.

But once the link began circulating on social media, it quickly became clear that plenty of drivers saw it as a tactical advantage in the daily battle for curb space.

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The city had to scramble to shut it down

The tracker’s lifespan was short but dramatic, and within roughly four hours of launch, the site stopped functioning after the city altered or restricted the data feed that powered it.

Officials said they support transparency and innovative uses of transportation data, but concerns over staff safety and the visibility of enforcement activity pushed them to act quickly.

The rapid shutdown showed just how powerful real-time information can be when it is packaged in a way that helps drivers, not the city.

For a brief window, San Francisco drivers had a live look at the city’s parking enforcement playbook.

By lunchtime, the experiment was over, but it proved one thing loud and clear: with the right skills and a public dataset, one developer can shake up an entire city.