Skip to main content Skip to site navigation

Bike & Pedestrian Collisions

General information

Bike and pedestrian collisions refer to collisions that involve bicyclists and pedestrians (and may include motor vehicles as well). Bike and pedestrian collisions can result in injuries and fatalities and contribute to motor vehicle accidents, one of the leading causes of death (PolicyLink, Healthy Equitable Transportation PolicyCDC, Leading Causes of Death).

Key Findings

  • There is a high concentration of bike and pedestrian collisions in Daly City, near the border of Burlingame and San Mateo, Redwood City, and North Fair Oaks.
  • Redwood City had the largest concentration of bike and pedestrian collisions.
  • 39% of bike and pedestrian collisions occur within a quarter mile of schools.


  • Data were obtained from UC Berkeley’s Transportation Injury Mapping System, which compiled data from California Highway Patrol’s Statewide Integrated Traffic Records System.
  • Collision data were compiled from multiple law enforcement agencies, including California Highway Patrol.
  • Collisions involving bicyclists and pedestrians that occurred from 2009 to 2013 were included in the analysis.
  • Collision data were analyzed using optimized hot spot analysis to determine where clusters of collisions occurred.
  • Data were analyzed and mapped using ArcGIS for Desktop.


  • Data may not include all collisions that occurred in San Mateo County from 2009 to 2013 due to incomplete traffic collision reports and collisions occurring on private property not being reported.