When are you allowed to drive in the left lane on a freeway?

Answer: B — When passing or if the left lane is designated for slower traffic

Driving in the left lane on a freeway is primarily intended for passing other vehicles. The correct option acknowledges that the left lane should be used when you are overtaking a slower vehicle. In many jurisdictions, including Texas, the left lane is considered a passing lane and is not meant for general travel. Therefore, drivers should move to the left lane when they intend to pass slower-moving traffic. Additionally, certain road signs may indicate the use of the left lane for specific types of traffic or conditions, reinforcing the idea that the left lane is primarily for faster-moving vehicles. This ensures that traffic flows smoothly and minimizes congestion on freeways. Understanding this rule helps all drivers maintain safe and efficient driving practices.