BOURBONNAIS, Ill. (March 18) — Investigators probing one of the deadliest U.S. passenger train crashes in recent years hope to determine today if the driver of a truck that the train hit drove around lowered crossing gates, Reuters news service is reporting.

Monday night’s crash involving an Amtrak train and a tractor-trailer hauling steel killed 13 and injured more than 100.

Chicago news reports said the locomotive’s trip recorder showed that the engineer, who survived, blew his horn twice and was trying to brake the train, and that the signal device at the crossing was working correctly.

The truck driver, whose licence had been suspended in January after being ticketed for speeding three times during the previous year, was quoted as saying he did not see the crossing lights until he was already in the intersection.

Incredibly, a train hits a vehicle in the U.S. almost every 90 minutes, according to the Federal Railroad Administration. More than half of the crashes occur at public crossings where warning devices such as gates, lights, and bells work properly.