When driving down a long downgrade, what should you do?

When driving down a long downgrade, using a lower gear than the one you went up in is crucial for maintaining control of the vehicle. A lower gear helps to utilize engine braking, which reduces the reliance on the vehicle’s brake system. This is particularly important because continuous braking can lead to brake overheating and failure. By shifting to a lower gear, you engage the engine to help slow the vehicle, which enhances stability and provides better control on steep slopes.

Using a higher gear would decrease engine braking effectiveness, making it harder to control speed. Activating hazard lights is usually unnecessary and could confuse other drivers as it may signal an emergency rather than simply indicating you are descending a hill. Accelerating to maintain speed is unsafe and could lead to losing control. It is essential to reduce your speed and descend safely rather than trying to maintain your previous speed. Thus, selecting a lower gear is the best practice for safe downhill driving.