On a 4-lane highway, where should slow vehicles be driven?

Slow vehicles should be driven in the right-hand lane on a 4-lane highway. This practice is important for maintaining smooth traffic flow and safety. The right lane is typically designated for slower-moving traffic, allowing faster vehicles to overtake on the left. By keeping slower vehicles in the right lane, drivers can reduce the likelihood of unnecessary lane changes or sudden stops, which can lead to confusion and accidents.

The left-hand lane is generally reserved for passing and faster-moving vehicles, meaning that having slow vehicles in that lane could create significant hazards. Allowing slow traffic to move in the left lane would disrupt the normal flow, leading to potential frustration and unsafe driving situations. Thus, positioning slow vehicles in the right lane is the accepted and safe practice on multi-lane highways.