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Join us May 24 to collect data on how fast drivers are really going on Guerrero

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Volunteer to help conduct speed surveys on Guerrero Street

Speed is the #1 cause of severe and fatal crashes in San Francisco – which means we need to take on speed in every possible way.

That’s what Walk SF’s Slow Our Streets campaign is all about. As part of the campaign in 2022 (and with your help!), we’re collecting speed data across the entire city.

Our next survey location is on Guerrero Street

Every year, about 40 people are injured in crashes on Guerrero Street. Just two years ago, a 36-year-old man lost his life in a crash at Guerrero and 16th. In 2019, Walk SF member Nancy Harrison was hit by a left-turning driver while crossing at 18th and Guerrero (read Nancy’s story).

You’re invited to join Walk SF and Nancy in collecting speed data on Guerrero on Tuesday, May 24 from 3:30PM – 5:00PM.

We’ll meet at the entrance to Dolores Park at 19th and Dolores for a short training, and then head out in groups of three to locations along Guerrero to collect speed data.

We’ll provide everything needed – no prior knowledge or experience needed. This will involve standing for over 90 minutes, including approximately 20 minutes of walking along hilly streets. This event is completely outdoors.

Questions? Email Walk San Francisco’s Vision Zero Organizer, Brian Haagsman at

Excited about this work? Help expand it and make a donation to the Slow Our Streets campaign.