ABS stands for which system?

ABS stands for which system?

• A. Automatic Braking System.
• B. Automatic Block System.
• C. Adaptive Block System.
• D. Automatic Boundary System.

Answer: (B)

ABS refers to Automatic Block System. The idea is to divide the track into defined sections called blocks and have the system automatically manage train movement so only one train can occupy a block at a time. Track detectors or interlock devices sense when a block is occupied, and signals ahead are set to stop or restrict entry to that block, preventing collisions. When the block ahead is clear, the system allows movement, maintaining a safe gap between trains. This focus on automatic control of train progression through block occupancy is what defines ABS in rail signaling. The other terms don’t fit because Automatic Braking System would imply brakes act automatically independent of block status, while Adaptive Block System and Automatic Boundary System aren’t the standard descriptions of this signaling method.

ABS refers to Automatic Block System. The idea is to divide the track into defined sections called blocks and have the system automatically manage train movement so only one train can occupy a block at a time. Track detectors or interlock devices sense when a block is occupied, and signals ahead are set to stop or restrict entry to that block, preventing collisions. When the block ahead is clear, the system allows movement, maintaining a safe gap between trains. This focus on automatic control of train progression through block occupancy is what defines ABS in rail signaling. The other terms don’t fit because Automatic Braking System would imply brakes act automatically independent of block status, while Adaptive Block System and Automatic Boundary System aren’t the standard descriptions of this signaling method.