Fleeting

nounStandard termRailroad

A signal system feature that automatically clears a route for consecutive trains.

A control setting on a dispatcher's console that allows an absolute signal to automatically display a proceed aspect for following trains once the block ahead clears. This eliminates the need for the dispatcher to manually line the route and clear the signal for every single train in a convoy.

Heard on the job

I've got the fleeting turned on for the eastbound main to flush out this backlog of coal drags.