Bicycle Collision Statistics - January 1 to November 19, 2025 (PDF)

Bicycle Advisory Meeting Commission Meeting - November 19, 2025)

Bicycle Collision Statistics - January 1 - November 19, 2025 

Overall Statistics

• Total collisions: 15
• Injuries: 14 (2 severe)
• Fatalities: 0
• E-bikes involved: 4

Fault Summary

• Motor vehicle driver at fault: 12 (80%)
• Regular bicycle rider at fault: 3 (20%)
• E-bike rider at fault: 0 (0%)

Bicyclist / E-bike Rider Ages (average ≈ 51 years old)

• Hit by vehicles: 6, 13, 16, 16, 55, 64, 65, 65, 69, 70, 74, 77
• At-fault bicyclists: 62, 70, 78

Primary Causes

Primary Causes When Motor Vehicle Driver at Fault (12 cases)

• Failed to yield / turned in front of bicyclist ─ 5
• Ran red light or stop sign ─ 3
• Hit-and-run ─ 1
• Right hook / turned right into bicyclist ─ 1
• Left turn in front of bicyclist ─ 1
• Struck inattentive bicyclist (still driver cited) ─ 1

Causes When Regular Bicyclist at Fault (3 cases)

• Struck parked vehicle ─ 1
• Cell phone use → rear-ended backing vehicle ─ 1
• Improper lane change → sideswiped motorcycle ─ 1

Hot Spots

Most Common Collision Locations

• Camino Tassajara at Blackhawk Rd ─ 2
• Diablo Road (Richard Lane, near W. El Pintado, Front St) ─ 3
• Sycamore Valley Rd (Camino Ramon, Iron Horse Trail, Greenbrook Dr) ─ 3
• Iron Horse Trail crossings ─ 2
• 1 each at:
  • Rutherford Drive and Blair Court
  • Laurel Drive and Princeton Lane
  • Laurel Freitas Trail (occurred on the trail)
  • El Capitan and Allegheny Drive
  • San Ramon Valley Blvd and Iron Horse Trail

Presented by: Allan Shields, Transportation Manager