Direct traffic control divides a line into fixed blocks, each with a name and posted limit signs, and the dispatcher gives a train authority to occupy one or more of them by radio. The crew releases each block as the train clears it, which keeps the radio work lighter than copying a fresh warrant. DTC is common on lower-density lines in the West.
We're in DTC from here west, so get the Hazen block from the DS and release it once the rear's by the sign.
Also heard as
- direct traffic control
Related terms
Track warrant
A written authority from the dispatcher, copied by radio, that lets a train occupy a set stretch of main track.
TWC
Track warrant control: running trains outside CTC on dispatcher-issued warrants with fixed limits.
DS
Dispatcher, as said on the radio: the person who controls train movements over a territory.
Block
A group of cars bound for the same destination, kept together so they can be handled as one unit.