Ontario Air Brake Practice · Question
Immediately after a trailer has broken away from a tractor, what typically happens to the trailer's brakes?
In the event of a trailer breakaway, the emergency air line will be severed, causing the trailer's emergency brakes to automatically apply fully, designed to br
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Question: Immediately after a trailer has broken away from a tractor, what typically happens to the trailer's brakes?
Answer options: ✅ The trailer brakes are automatically applied fully.
- The trailer brakes are released.
- The trailer brakes continue to function normally.
- The trailer brakes activate only if the air pressure is above 600 kPa.
Correct answer: The trailer brakes are automatically applied fully.
Explanation: In the event of a trailer breakaway, the emergency air line will be severed, causing the trailer's emergency brakes to automatically apply fully, designed to bring the trailer to a safe stop.
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