Basic Operation
A typical PTC system involves two basic components:
- Speed display and control unit on the locomotive
- A method to dynamically inform the speed control unit of changing track or signal conditions.
Optionally, three additional components may exist:
- An on board navigation system and track profile database to enforce fixed speed limits
- Bi directional data link to inform signaling equipment of the train's presence
- Centralized systems to directly issue movement authorities to trains
Read more about this topic: Positive Train Control
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