In Austrian vehicle safety and driving technique, how does driving on wet or icy road surfaces affect braking distance compared to dry tarmac?
Answer and explanation
Correct answer: A. Braking distance increases substantially (up to double on wet, up to tenfold on sheet ice)
- Step 1: Water and ice radically reduce the tire-road friction coefficient (mu), extending braking distance up to 2x on wet roads and 4x to 10x on packed snow and ice. Answer: Braking distance increases substantially (up to double on wet, up to tenfold on sheet ice). Why not the others: Braking distance remains identical if ABS is active, Braking distance decreases and Braking distance only increases if tyres have under 2 mm tread do not reflect Austrian technical safety guidelines.
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