Collision injury data are available from several sources in Marin County.

County:  The County publishes a Bicycle Safety Dashboard with data based on 911 calls since October 2023.  The key result is that the accident rate for 10-15 year olds is more than 5 times higher than any other age group.  And unlike the older age groups, a higher percentage of these injuries are traffic-related rather than solo accidents.   

Together with surveys of the number and types of e-wheels at local schools, the County data also shows that while throttle two-wheelers (e-bikes and e-motos combined) account for only 15 percent of the two-wheelers at middle schools, they account for over 50 percent of the serious injury collisions.

The County also segregates its data by traffic-related and non-traffic-related.  This slice raises concerns about e-bike safety for 10-15 year olds too.  For that age group, traffic-related injuries are twice as frequent on e-bikes as conventional — the opposite of all other age groups.  And while the non-traffic related injuries for 10-15 years is about the same for conventional and e-bikes, all other groups have a much higher rate for conventional.  These data suggest that e-bikes are particularly dangerous for 10-15 year olds.

Marin Municipalities:  Several Marin municipalities also record injury information by type of vehicle.  E-bike Access has used the Public Records Act to obtain this information.  It heightens our concern about the need for enforcing the laws against illegal e-motos.

For example, according to the Central Marin Police Authority, at least 90-95% of accidents in Central Marin as of July 2024 involved throttle e-motos mislabeled as class 2 e-bikes.  A majority of the accidents involved Super73s; other brands included Juiced Rip Rider, Ride1Up, Ride Pro SS and Lectric XP3.  For the record provided by CMPA, a majority of the rider victims were under 16 years of age.