When is it illegal to drive in the left lane of a multi-lane road?

Driving in the left lane of a multi-lane road is illegal when you are not passing another vehicle because that lane is typically designated for faster-moving traffic. The left lane serves as a passing lane, allowing vehicles traveling at higher speeds or overtaking slower vehicles in the right lanes. When a driver remains in the left lane without actively passing, it can create unnecessary congestion and frustration among other drivers, leading to unsafe conditions.

Understanding traffic regulations helps ensure a smoother flow of traffic and enhances road safety. Staying out of the left lane unless you are overtaking helps prevent collisions and keeps lanes available for those who need to travel faster. This regulation is commonly enforced in many jurisdictions as part of safe driving practices.