Tennessee Permit Practice Test

When is it permissible to drive in the left lane on multi-lane roads?

1. When in heavy traffic

2. When passing another vehicle

3. When turning left

4. Only at night

The correct answer is: When passing another vehicle

Driving in the left lane on multi-lane roads is primarily intended for the purpose of passing other vehicles. This rule is designed to maintain a smooth flow of traffic and reduce congestion. When a driver wishes to overtake a slower vehicle, they are permitted to move into the left lane temporarily. After the maneuver is complete, it is advisable for the driver to return to the right lane to allow other vehicles to pass, thereby promoting safety and efficiency on the road. In heavy traffic, it might not be clear or safe for all vehicles to adhere strictly to lane usage guidelines, and therefore, the left lane may be occupied for reasons other than passing. The option regarding turning left refers specifically to instances where a driver is preparing to make a turn but does not justify driving in the left lane continuously on a multi-lane road. The idea of only driving in the left lane at night does not align with standard road usage rules that apply at all times. The emphasis on using the left lane for passing is crucial for understanding traffic laws and ensuring road safety for all drivers.