There is a flat spot (thumper) detector on the BNSF's St. Croix Sub near Cochrane, WI at MP 339. Unlike hot box or dragging equipment detectors, crews do not get an automatic reading when they go over this particular thumper detector. The crew calls the St. Croix dispatcher & lets the dispatcher that they are going over the detector. After the information has been processed, the dispatcher will usually only notify the crew if there are any problems.
How does the thumper detector on the Northeast Corridor work? Is it automatic or do the Amtrak crews also have to notify the dispatcher?
How does the thumper detector on the Northeast Corridor work? Is it automatic or do the Amtrak crews also have to notify the dispatcher?