What does a "slower traffic keep right" sign indicate?

Answer: C — Drivers should stay in the left lane if they are traveling faster

A "slower traffic keep right" sign communicates an important rule of the road: drivers who are traveling at a slower speed than the flow of traffic should use the right lane. This helps maintain easier and safer traffic flow, allowing faster vehicles to pass on the left. The intent is to minimize obstacles for those who want to drive at higher speeds, which enhances overall road safety and reduces the likelihood of congestion. Drivers traveling faster than the prevailing speed of traffic are encouraged to stay in the left lane, where they can maneuver past slower-moving vehicles more efficiently. This rule helps ensure that lanes are used in a manner that promotes optimal traffic flow and reduces the risk of accidents caused by sudden lane changes or slow vehicles in faster lanes.