Ontario Class D Practice Test · Question
When coupling a small trailer equipped with surge brakes to a straight truck, what is important to ensure about the electrical connection?
The electrical connection to a trailer is vital for operating required safety lights (running, turn, brake lights) and, in some cases, for the trailer's breakaw
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Question: When coupling a small trailer equipped with surge brakes to a straight truck, what is important to ensure about the electrical connection?
Answer options:
- The electrical connection is only for interior trailer lighting
- The electrical connection is not necessary if safety chains are used ✅ The electrical connection powers the trailer's running lights, turn signals, brake lights, and sometimes breakaway system
- The electrical connection is used to charge the truck's battery
Correct answer: The electrical connection powers the trailer's running lights, turn signals, brake lights, and sometimes breakaway system
Explanation: The electrical connection to a trailer is vital for operating required safety lights (running, turn, brake lights) and, in some cases, for the trailer's breakaway system which applies brakes if the trailer detaches. (Provincial Driver's Handbook)
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Question explanations
- When performing a pre-trip inspection, what is the minimum air pressure required in an air brake system before
- When driving a straight truck, how should you pass a pedestrian walking on the shoulder of the road without a
- Scenario 1: Tare weight refers to:
- Scenario 2: Gross combination weight (GCW) is:
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