What are you required to do according to the following road sign?

1. Drive fast in the right lane.
2. Correct answer: Slow down gently and refrain from sudden braking or sharp turns.
3. Shift into high gear.
4. Drive in the right lane and overtake quickly.

WhyOn a slippery road, slow down gently and avoid sudden braking and sharp steering: that way you keep your grip. Overtaking and high gears have nothing to do with it.