Some suspected it was a tornado warning siren sounding at an odd time. Others feared it was an accident on the Tri-State Tollway. The real culprit: A BNSF freight train stopped in Hinsdale with its horn blaring non-stop for 30 minutes.
Railroad workers could be seen inspecting the locomotive but there was no outward sign of a serious problem with the train, which was stopped just short of the Highlands station around 12:30 this afternoon. BNSF spokesman Andy Williams tells ABC 7 the train's horn simply wouldn't shut off. "It happens from time to time," Williams said. Rail regulations prohibit a train from operating without a working horn so BNSF had to bring in a second locomotive to tow the train.