You are driving a motor vehicle with a manual gearbox. What must you consider when you see this road sign?

This road sign warns of a steep downhill gradient of 10%. When driving a vehicle with a manual gearbox on such a slope, the braking distance will be longer because gravity pulls the vehicle downhill, making it harder to stop quickly. Additionally, if you apply the brakes for a longer time, the brakes can overheat and lose effectiveness, which reduces the braking response. Therefore, you should not rely solely on the brakes but use engine braking by selecting a lower gear to help control your speed safely.

Option 3 is incorrect because not engaging a gear (coasting) reduces your control and braking efficiency on a downhill slope and should be avoided. Always have a gear engaged to help control the vehicle.