On a road with three or more lanes, where must you stay unless passing another vehicle?

On a road with three or more lanes, it is important to stay in the right lane unless you are passing another vehicle. This rule helps to promote smoother traffic flow and minimizes the risk of accidents by allowing faster vehicles to pass on the left, which is the expected behavior in conformity with roadway regulations. The left lane is generally reserved for overtaking slower vehicles and for drivers who need to make turns, while the middle lanes can be used for various purposes but are typically not designated as the preferred lane for slower moving traffic.

Staying in the right lane helps to keep traffic organized and ensures that slower-moving vehicles are not obstructing faster traffic, thereby enhancing overall safety on multi-lane roadways.