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

In a multi-lane road scenario, the extremely right lane is designated for slower-moving vehicles and is the appropriate lane for drivers who are not in the process of overtaking another vehicle. This positioning enhances traffic flow and ensures safety, as it allows faster-moving vehicles to utilize the left and middle lanes for passing. Staying in the extreme right lane provides a clear path for those who are executing maneuvers to pass or change lanes.

The left lane is generally reserved for passing and should be kept clear for vehicles that are overtaking those in other lanes. The middle lane often serves as a transitional space but does not have the same specific purpose as the extreme right lane. The emergency lane is intended solely for emergency vehicles and breakdowns and should not be used for general driving. Therefore, maintaining a position in the extreme right lane while not actively passing is essential for the safety and efficiency of road traffic.