Transcript for Did Road Rage Cause Two Vehicles to Tumble Off a California Highway?
Authorities are studying a frightening moment on a highway in Southern California a pickup truck careens into the next lane hitting a car both vehicles tumble off the road. And now a new theory has emerged road rage ABC's -- it cannot meet with what we're learning tonight. And -- pick up truck suddenly swerves into a car ramming it off the road and then flipping on its side. This dangerous crash on -- San Diego freeway happening Saturday afternoon during busy traffic. The drivers both women and officials say the pickup truck angry that another driver cut her off watch as the truck pulled along side of that silver sedan officials say the driver tries to gesture and -- suddenly loses control of the vehicle. Police now investigating this as a possible case of extreme road rage. The aggressiveness that can lead to a crash like this -- growing problem on our roads causing nearly 14100. Deaths over a five year period. Studies finding young adults are more likely to engage in road rage. Experts say cutting someone off and it -- -- common triggers. So is making obscene gestures as seen in this -- driver loses control of his pick up after gesturing and cutting off the other drivers. Tonight officials say both women suffered minor injuries. He can on -- ABC news Los Angeles.
This transcript has been automatically generated and may not be 100% accurate.