When is it required for drivers to return to the right lane after passing another vehicle?

Returning to the right lane immediately after passing another vehicle is essential for maintaining safe traffic flow and preventing potential hazards. This requirement is based on the principle that the left lane is primarily for passing, while the right lane is for regular travel. By returning to the right lane as soon as it is safe to do so, drivers help sustain the efficiency of traffic patterns and reduce the likelihood of creating a bottleneck or obstructing faster-moving vehicles.

This practice also promotes safer driving, as lingering in the left lane can lead to frustration for other drivers who may be trying to pass. While other factors such as ensuring the lane is clear, adhering to road signs, or specific rules in residential areas are important, the key emphasis here is on the immediate aspect of returning to the right lane to enhance overall traffic safety and flow.