What does the sign "Slower Traffic Keep Right" signify?

The sign "Slower Traffic Keep Right" is a directive intended to enhance road safety and improve traffic flow, particularly on multiple-lane roadways. It signifies that vehicles traveling at a slower speed than the prevailing traffic should move to the right lane. This helps to minimize unnecessary lane changes and weaving between cars, which can lead to accidents. By keeping slower vehicles in the right lane, faster-moving traffic can safely pass on the left, reducing congestion and making travel more efficient for everyone.

In contrast, the other options provide interpretations that do not accurately reflect the purpose of the sign. The first option suggests that all traffic should go slow, which doesn't acknowledge the need for faster traffic to have a clear lane for passing. The second option incorrectly limits the directive to bicycles, ignoring its relevance to all motor vehicles. Lastly, the fourth option implies that all vehicles must leave the freeway, which is not related to the message conveyed by the sign.