In Serbian vehicle safety and regulations, how can a driver verify that the vacuum brake servo booster is functioning properly before starting the engine?
Answer and explanation
Correct answer: A. Pump brake, hold pressure, start engine; pedal sinks
- Step 1: Pumping with engine off depletes vacuum. When started, vacuum builds, causing the pedal to sink slightly under foot pressure. Answer: Pump brake, hold pressure, start engine; pedal sinks. Why not the others: the alternative options do not represent statutory provisions under Serbian vehicle safety and technical regulations.
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