9th and Mission

Dear Supervisor Dorsey, I am writing to express serious concerns regarding pedestrian safety at the intersection of 9th and Mission, a location in District 6. This intersection shows more reported harm than 99 percent of San Francisco intersections, earning an F grade on the Danger Index. No exposure normalization: the index ranks reported harm, not risk per crossing. City records document 72 injury collisions within 150 meters of this intersection in the last five years. This count covers a 150-meter radius, while the Danger Index grade is computed over a tighter 80-meter core, so the two figures are measured over different areas and a reader should not expect them to reconcile. The automated visual audit flagged a vehicle turning conflict zone in the Street View photograph, and city records corroborate 13 pedestrian crossing collisions in 5 years. City records also show 319 street-condition 311 reports in the last three years, covering street defects, sidewalk and curb, signs, streetlights, and blocked sidewalks. In the last 12 months, city records show 13 street-condition 311 reports relating to faded or sub-standard crosswalk markings, 3 street-condition 311 reports relating to inadequate street lighting, and 7 street-condition 311 reports relating to curb or sidewalk in poor condition. The visual audit did not find these issues in the photograph. While no press coverage was found for this corner in a recent search, press coverage of safety problems at this intersection goes back at least 12 years, to 2014, as the earliest coverage we can find. As one resident noted about a similar traffic measure, "San Francisco traffic measure is driving motorists crazy," highlighting the need for effective design. I urge you to fund Continental crosswalks, corner daylighting, and a leading pedestrian interval. An estimated $250,000 to $350,000, order of magnitude, could be secured through the Caltrans Highway Safety Improvement Program (HSIP). Thank you for your attention to this critical matter. A resident of District 6