RIVIERA BEACH, Fla. (AP) _ A passenger train crashed into a tractor-trailer that was sitting at a red light with part of its rig on the tracks, injuring seven people in nearby vehicles, authorities said.

None of the injuries were serious, said Deputy Chief Steve Delai of the Palm Beach County Fire-Rescue Department. The truck driver and all aboard the train were uninjured, authorities said.

The train was carrying 104 passengers and 12 crew members from Miami to New York City when it rammed the truck on the outskirts of West Palm Beach, Amtrak spokesman Marc Magliari said.

Delai said the train knocked the semi into at least five vehicles.

The engineer reported that the crossing gate and warning lights were operating properly, Magliari said.

The tracks are owned and operated by Jacksonville-based CSX Corp. A message left with the company was not immediately returned.