Which safety control devices may initiate a penalty brake application?

Which safety control devices may initiate a penalty brake application?

• A. All of the above
• B. Alertness Device
• C. Overspeed
• D. Positive Train Control

Answer: (D)

A safety control system that can enforce rules by automatically applying brakes is Positive Train Control. PTC continuously monitors speed, location, and movement authority, and when a violation is detected or restrictions aren’t being followed, it can automatically initiate a penalty brake application to bring the train into compliance. Alertness devices mainly warn or prompt the operator, and overspeed conditions are what PTC detects and manages, but the actual automatic brake enforcement comes from PTC. That’s why this option is the best answer.

A safety control system that can enforce rules by automatically applying brakes is Positive Train Control. PTC continuously monitors speed, location, and movement authority, and when a violation is detected or restrictions aren’t being followed, it can automatically initiate a penalty brake application to bring the train into compliance. Alertness devices mainly warn or prompt the operator, and overspeed conditions are what PTC detects and manages, but the actual automatic brake enforcement comes from PTC. That’s why this option is the best answer.