CURB: SF Street Parking

Your street-cleaning sign says 9 to 11am. The tickets say 9:12am. CURB is a free map of San Francisco street-parking rules, and the only one that shows you WHEN tickets actually get written, not just when the sign says you're at risk. I obtained about a million GPS-located SFMTA street-cleaning citations through a public records request and matched about 815,000 of them to the blocks where they were issued (2024 to mid 2026). The finding: that posted 2-hour window is mostly a 20-minute reality. On a typical block, most tickets land within about 20 minutes of each other. Citywide, about 77% are written in the first 45 minutes of the posted window and about 90% in the first hour. Take the 200 block of Steiner St. Posted window: 9 to 11am. From 2024 to mid 2026: 278 tickets, the earliest at 9:00am, the median at 9:12am, and 90% written by 9:21am. The "2 hours" was never real. WHAT CURB SHOWS YOU • Every block colored by its next street sweep. See at a glance where it's safe to park • When tickets actually get written on your block, rebuilt from public SFMTA citation data • Residential permit (RPP) zones, meters, and color curb • ~1,975 unmetered white passenger-loading zones (627 of them by schools) pulled straight from the city's own curb map, the ones DataSF leaves out • Holiday enforcement flags, like SF suspending daytime street-sweeping enforcement on Juneteenth MOVE-YOUR-CAR ALERTS • Pick how hard CURB nags you: a single 30-minute heads-up (Light), plus the night before (Normal), or add a morning-of warning too (Intense) • Choose the voice: warm and funny, drill-sergeant, or deadpan-with-the-receipts • Native iOS push, plus a one-tap calendar (.ics) sweep event • No more "I forgot it was Tuesday" THE SCALE OF IT • $105 street-cleaning fine in 2026 • 24M total parking citations in SF since 2008 • Over a million street-cleaning tickets since 2024 alone • Enforcement is surging where the city is building: Mission Bay and Financial District / South Beach are up the most vs. five years ago A NOTE ON HONESTY CURB reads the patterns in public data so you don't have to. But the posted physical sign is always the final authority. CURB never overrides it, and neither should you. Built by one person in San Francisco who got tired of the parking math. Free. No ads. No signup. No account. No cookies. If you turn on alerts, CURB stores an anonymous push token with the curb you picked.