By what proportion can the braking distance increase when driving on an icy road surface?

Question

DentroTest · Accepted Answer

Braking distance is the distance the vehicle travels from the moment the driver presses the brake pedal until it comes to a complete stop. This distance depends directly on speed, on the condition of the vehicle and, critically, on the grip between the tire and the road surface. On a roadway wet from rain, the braking distance usually multiplies by two (doubles). However, when the roadway has ice, the friction coefficient drops drastically to practically zero, so that the distance needed to bring the vehicle to a stop can multiply up to ten times compared with dry asphalt with good grip.

By what proportion can the braking distance increase when driving on an icy road surface?

Want to pass the Permit C and C1 (English) theory test first time?