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

1. Correct answer: Prepare for a possible braking, deviation or stopping due to falling rocks.
2. Dangerous descent, shift to low gear.
3. Stop and take another (alternative) road.
4. Drive faster to avoid falling rocks.

WhyThe falling rocks sign warns that stones may be on the road. Be ready to brake, steer around or stop, not to speed up.