Ontario Bus Driver Knowledge Practice Test

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Elevate your Ontario bus driving career with our comprehensive practice test. Perfect your knowledge and navigate the roads to success with confidence.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Before testing hydraulic brakes with power assist on a bus, you should?

Pump the brake pedal several times
Check the brake fluid level
Turn the engine off and on
Apply the parking brake

The correct answer is: Pump the brake pedal several times

Before testing the hydraulic brakes with power assist on a bus, it is important to pump the brake pedal several times. This is because the power assist system relies on a vacuum to help increase braking force, and pumping the pedal will create the necessary vacuum. Checking the brake fluid level (B) and turning the engine off and on (C) are unnecessary steps and will not affect the power assist system. Applying the parking brake (D) may also create unnecessary resistance when testing the brakes and could provide inaccurate results. Therefore, pumping the brake pedal several times (A) is the most important step to ensure accurate results when testing the hydraulic brakes with power assist on a bus.