What is the purpose of the right lane on a freeway with three lanes?

The right lane on a freeway with three lanes is primarily designed for overtaking. This lane allows faster-moving vehicles to pass those traveling in the middle and left lanes, facilitating smoother traffic flow. When drivers need to overtake slower vehicles, they should use the right lane and return to the left or middle lanes after completing the maneuver. This helps maintain consistent speed across the freeway and reduces potential congestion by avoiding prolonged stays in the overtaking lane.

The other options are not suitable for describing the purpose of the right lane. Stopping is generally prohibited on freeways, as they are designed for continuous movement. Emergency vehicles typically utilize designated emergency lanes rather than being restricted to the right lane exclusively. Slower vehicles are encouraged to use the left or middle lanes to prevent congestion in lanes intended for faster traffic.