Why is the first rainfall after a prolonged dry period particularly treacherous for driving?
Answer and explanation
Correct answer: B. Rain mixes with oil and dust deposits creating a slippery emulsion film
- Step 1: Road surface hazards after dry spells. Step 2. Accumulated oil, rubber dust, and grime emulsify with initial rain, forming a slick film until washed away. Answer: Rain mixes with oil and dust deposits creating a slippery emulsion film. Why not the others: Bitumen does not dissolve; rubber does not soften; hydraulic pressure is unaffected by rain.
Practise more Driving Safety, Emergency Response and Vehicle Operation.
Free questions with an explanation for every one, and full timed Vozački ispit (Driving Theory Test) - Croatia mock tests.
More Driving Safety, Emergency Response and Vehicle Operation questions
- What two main components constitute the total stopping distance of a motor vehicle?
- How does doubling the travel speed affect the braking distance of a passenger vehicle?
- What is the primary function of an Anti-lock Braking System (ABS) during emergency braking?
- What sensation is normal for the driver when ABS activates during heavy emergency braking?
- What phenomenon occurs when tires lose contact with the road due to a water layer?
- What is the correct driver reaction when experiencing sudden aquaplaning?