The narrow channel left open between a running rail and a check rail, or between the rail and pavement at a grade crossing. It provides the necessary physical space for the inner lip of the wheel to roll through without striking an obstruction.
Heard on the job
Keep an eye out for ice buildup in the flangeway at the main street crossing.
Related terms
Flange
The projecting inner edge of a rail wheel that keeps the vehicle on the track.
Check rail
An inner guard rail installed parallel to the running rail to keep wheels aligned through complex trackwork.
Frog
The crossing piece in a turnout or diamond where one rail passes through another and wheels cross the gap.