Why Should Downhill Vehicles Yield to Uphill Vehicles?

[DiAlivia]

This is considering that vehicles going uphill are prone to stalling, which can easily lead to traffic accidents. There are two scenarios when vehicles meet on a slope: 1. Both the uphill and downhill vehicles are at the extreme ends of the slope: If the downhill vehicle goes first, its faster speed on the slope can easily create driving hazards. If the uphill vehicle goes first, even if a traffic accident occurs, the consequences would be relatively minor. 2. When both vehicles are in the middle of the slope: If the uphill vehicle stops to yield to the downhill vehicle, for manual transmission vehicles, it is very easy to stall, leading to the vehicle rolling back down the slope and causing a traffic accident. This is because the uphill vehicle must increase throttle to overcome the resistance of the slope, requiring the engine to generate more kinetic energy and traction to complete the climb. If the downhill vehicle yields to the uphill vehicle, the situation becomes much simpler, as the downhill vehicle can easily brake midway to descend the slope safely.