When is it prohibited to drive in the left lane of a highway?

Driving in the left lane of a highway is prohibited when it is designated for passing only, or if there’s slower traffic in that lane. The left lane is typically intended for vehicles wishing to pass those traveling at slower speeds. This regulation helps maintain smooth traffic flow and promotes safer driving experiences by ensuring that faster-moving traffic can overtake more slowly moving vehicles effectively. When slower vehicles occupy this lane, it can lead to congestion and increased risk of accidents, as it disrupts the natural flow of traffic.

The other scenarios, such as lanes reserved for passengers only or designated speed limits, may impose restrictions under different circumstances, but they do not specifically address the nature of lane usage in the context of passing and slower traffic. Lastly, while barriers on highways may indicate certain travel restrictions, they do not specifically relate to the rules surrounding lane usage based on speed or intent to pass.