CN5307 leads Symbol 140-31 east to Tappan (Port Huron) on July 31, 1996 shown here at MP14 on the Mt. Clemens Sub at 7:40pm. Intermodal Traffic makes up a good deal of the tonnage carried on the original Grand Trunk line into Detroit. Dark territory under Radio Control Broadcast System, all movements are governed by the TDT1 dispatcher in Pontiac, MI on the Mt. Clemens Sub.