F · worse than 99% of San Francisco intersections

69 collisions in 5 years, 197 street-condition 311 reports in 3 years

PARTIAL

Get the letter
The corner, three ways

Lafayette and Mission

ENRICHED
San Francisco, district unresolved
Street View plus Gemini
The corner, three ways

No photograph stored for this corner yet.

TodayThe corner as Street View last photographed it. Imagery: Google.

Official record
Case fileevery date read from a stored record, none invented
  1. DataSFScored from the city's own recordsdate not recorded
  2. Google MapsPhotographedchecking the stored frame
  3. ExaPress readchecking stored coverage
  4. ApifyResidents heardchecking stored scrapes
  5. GeminiVisual auditchecking the stored audit
  6. GeminiFix drawnchecking the stored render
  7. The gateLetter verifiedchecking the stored letter
  8. YouSent: that part is yoursthe letter is drafted, never sent by us

Press coverage

found live, cited Press via Exa

Resident voices

scraped
Injury collisions, last 5 years
within 150m
Street-condition 311 reports, 3 years
within 150m
Supervisor district

The ask

DRAFT ONLY
Proposed fix
Continental crosswalks, corner daylighting, and a leading pedestrian interval
$250,000 to $350,000, order of magnitude
Funding route
Caltrans Highway Safety Improvement Program (HSIP)
NOT SENT TO ANY OFFICIAL
Dear Supervisor Dorsey, I am writing to express my serious concern regarding pedestrian and traffic safety at the intersection of Lafayette and Mission Streets in District 6. City records document 69 injury collisions within 150 meters of this intersection in the last five years. This figure covers a 150-meter radius, while the Danger Index grade is computed over a tighter 80-meter core, so these figures are measured over different areas and should not be expected to reconcile. The 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. In the last three years, there have been 198 street-condition 311 reports at this location, covering street defects, sidewalk and curb issues, signs, streetlights, and blocked sidewalks. While no recent press coverage was found, press coverage of safety problems at this intersection goes back at least 12 years, to 2014, representing the earliest coverage we can find. City records show 311 reports: 4 in 12 months, and 5 pedestrian crossing collisions in 5 years, relating to faded or sub-standard crosswalk markings. City records also show 311 reports: 4 in 12 months relating to inadequate street lighting, and 311 reports: 5 in 12 months relating to curb or sidewalk in poor condition. To address these documented hazards, I urge you to support funding for Continental crosswalks, corner daylighting, and a leading pedestrian interval at this intersection. 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. Sincerely, A resident of District 6
draftedby Gemini

Every figure in this letter is checked against the source records before it is shown. A draft that states something the records do not support is rejected and rewritten.

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Google GeminiGeminiAudits the real Street View frame for hazards, renders the fix, writes the letter
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Google MapsGoogle MapsStreet View frames, the corner thumbnail, and the city map
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DataSFDataSFCollisions and 311, queried by radius around the corner

Every claim about a dangerous corner, graded and traced to its source, ending in a letter to the Supervisor.