HANFORD, Calif. (AP) — Two cars and the locomotive of an Amtrak train carrying about 169 passengers derailed Monday after colliding with a big rig truck in California's Central Valley, authorities said.

At least 20 passengers suffered minor to moderate injuries, authorities said.

The 12:25 p.m. crash occurred when the driver of the tractor-trailer carrying cotton trash failed to yield and hit the train, authorities said. The impact pushed the two passenger cars and the locomotive off the tracks south of Hanford, a farming town.