LK DMT Heavy Vehicle Written Practice Questions - Sri Lanka Department Of Motor Traffic Heavy Vehicle Written Test Exam

What is the primary safety function of a dual air brake system in a heavy passenger bus?

To double the braking power when descending steep hills To provide separate front and rear brake circuits in case of a system leak To allow the passenger bus to travel at higher speeds safely To automate the parking brake release process during departures

Correct Answer:

To provide separate front and rear brake circuits in case of a system leak

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