Class 1 Commercial Driver Practice · Question
Scenario 106: The recommended minimum following distance for a tractor-trailer under 80 km/h on dry roads is at least:
Allow at least 1 second per 3 metres of vehicle length under 60 km/h; for typical 18-m combinations at highway speeds use 6+ seconds, but at least 4 seconds at
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Question: Scenario 106: The recommended minimum following distance for a tractor-trailer under 80 km/h on dry roads is at least:
Answer options:
- 2 seconds
- 3 seconds ✅ 4 seconds
- 1 second per truck length
Correct answer: 4 seconds
Explanation: Allow at least 1 second per 3 metres of vehicle length under 60 km/h; for typical 18-m combinations at highway speeds use 6+ seconds, but at least 4 seconds at lower speeds. The correct answer is "4 seconds". This capacity-fill scenario 106 reinforces the same competency for the class1 bank and follows the certified explanation standard.
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Question explanations
- Approaching a sign that reads 'Runaway Lane / Emergency Escape Ramp Ahead', what is the immediate significance
- A rectangular sign with a truck symbol and an upward-pointing arrow, followed by 'Steep Grade', combined with
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