ABS
Automatic Block Signal
Where this acronym appears
- Automatic Block Signal (ABS)
An Automatic Block Signal system divides track into blocks protected by wayside signals that display aspects based on the occupancy of the block ahead, without dispatcher intervention.
- Centralized Traffic Control (CTC)
CTC is a signal and train control system that allows a remote dispatcher to remotely operate switches and signals over a defined territory, managing all train movements from a central location.