What adjustment should be made when going up a hill concerning clearance time needed for passing?

When driving up a hill, it is important to increase your clearance time when attempting to pass. This adjustment is necessary because the incline affects both your vehicle's speed and the visibility of oncoming traffic. As you drive uphill, your vehicle's engine may not provide the same power as when driving on level ground, which can slow your rate of acceleration. Additionally, a hill can obstruct your view of approaching vehicles, making it more difficult to assess whether it is safe to complete the pass.

By increasing the clearance time, you allow yourself extra time to safely complete the maneuver. This ensures that you have adequate space to return to your lane without putting yourself or other drivers at risk. The added clearance time is crucial for maintaining safety, particularly in situations where visibility is compromised. Properly adjusting your passing time when going uphill can greatly enhance your safety on the road.