What is the most important rule to remember when passing another vehicle?

The most important rule to remember when passing another vehicle is ensuring there is enough clear distance before passing. This rule emphasizes the need for safety and consideration of the speed of both the vehicle being passed and your own vehicle. Adequate distance allows for a safe maneuver without endangering yourself, the vehicle you are passing, or any other cars on the road.

When you ensure that there is enough clear distance, you can assess the road conditions and react appropriately if the situation changes. This approach greatly reduces the risk of collisions, which can occur if a driver attempts to pass without sufficient space to do so safely.

Other rules regarding signaling intent, the speed of passing, and which side to pass on are also important; however, they are secondary to the fundamental need for clear distance. Without adequate space, even the best signals or quick passing can lead to dangerous situations. Prioritizing clear distance is essential for safe driving practices.