Philadelphia Drivers License Practice Test

In Pennsylvania, it is illegal to drive in the left lane of the highway under certain conditions, specifically when you are not in the act of passing another vehicle. The left lane is typically designated for passing slower vehicles in the right lane, allowing for smoother traffic flow and reducing congestion. When you are actively passing another vehicle, using the left lane is appropriate and legal. However, remaining in the left lane without intention to pass can lead to unsafe driving habits, such as impeding traffic and increasing the risk of collisions.

In terms of the other scenarios presented, driving in the left lane simply because you are in a rush, for example, does not justify its use and violates the driving rules. Similarly, the speed limit being below 55 mph does not inherently restrict left lane usage if a vehicle is actively passing. Lastly, there is no blanket restriction on commercial vehicles in the left lane; it’s more about the purpose of the lane usage rather than vehicle type.