SAN DIEGO (CBS 8) - A motorcycle accident tied up traffic on Interstate 15 in Serra Mesa Wednesday afternoon.

It happened just after one-fifteen on the 15 south near aero drive. Witnesses say the motorcyclist was lane-splitting and hit another car, knocking the person off the bike and into freeway lanes.
     

The motorcyclist was taken to the hospital. Authorities haven't commented on the person's injuries.