San Francisco, California — Reports of brain injuries and other serious trauma involving e-bikes and electric scooters are drawing attention as micromobility use continues to expand across the city. Physicians say riders are arriving in emergency departments with fractures, facial trauma, concussions, and, in the most severe cases, traumatic brain injuries.
San Francisco Doctors Report More E-Bike and Scooter Injuries
Emergency physicians in San Francisco report treating e-bike and scooter injuries more frequently as ridership grows. One recent case involved a 33-year-old woman who fell shortly after trying a Lyft e-bike in Hayes Valley, suffering an arm injury after losing control as the motor engaged.
Doctors at Zuckerberg San Francisco General Hospital and Kaiser have also reported patients with head and facial trauma following high-speed falls and collisions. Some riders were reportedly not wearing helmets at the time.
The concern extends beyond San Francisco. A July 2026 UC San Diego study found an exponential increase in California e-bike injuries and reported that e-bike riders were more likely to sustain moderate-to-severe injuries than conventional bicycle riders. National UCSF research has likewise documented substantial growth in e-bike and e-scooter injuries.
When an E-Bike Crash May Lead to an Injury Claim
A crash resulting in traumatic brain injuries may raise personal injury issues. This is especially relevant when another driver’s negligence, a dangerous roadway condition, or another party’s conduct contributed to the incident.
Evidence such as crash reports, photographs, witness accounts, video footage, and information about the vehicles involved may help establish what happened.
Important California considerations include:
- California Vehicle Code Section 312.5 defines and classifies electric bicycles and subjects riders to specified bicycle rules
- Class 3 e-bike riders and passengers must wear properly fitted helmets under Vehicle Code Section 21213
- Comparative fault may reduce compensation when an injured person shares responsibility for the harm
- California generally provides two years to bring an injury action based on another party’s wrongful act or negligence, although exceptions can change the deadline
At Brain Injury Help Center
A serious brain injury can affect memory, concentration, mobility, employment, and a family’s daily responsibilities.
Brain Injury Help Center can help injured riders and their families understand their legal options, identify potential sources of liability, and connect with appropriate legal support. If you or a loved one sustained a brain injury in an e-bike, scooter, bicycle, or vehicle collision, contact the Brain Injury Help Center to discuss your situation.
Free consultations are available, regardless of immigration status.
