Statistics have been increasing since 2011.
The most recent data reveals that primary causes of motorcycle-involved crashes are speeding, unsafe turning and impairment due to alcohol and other drugs. So-called ‘lane splitting’ also figures in many freeway mishaps.
Riverside police are responding with a 1-day motorcycle safety enforcement operation. On Friday, extra officers will be on duty patrolling areas frequented by motorcyclists and where motorcycle crashes occur.