A crash backed up traffic on Gravenstein Highway south of Sebastopol during rush hour Tuesday evening, but the injuries to the motorists turned out to be relatively minor.

Originally reported at 5:30 p.m. as a head-on collision between a Toyota Prius and Toyota Camry, the most serious injury ended up being a bloody nose for an occupant in one of the vehicles, said CHP Sgt. Jeff Abrams.

"It ended up being minor," he said.

The accident was on Highway 116 near Woodworth Road.