The slower traffic keep right sign is a regulatory lane control sign. This sign communicates to the drivers that if you are driving at a slower speed than the normal speed of the traffic on the multi-lane highway, then you should drive in the right-most lane unless passing. So that the faster traffic on the roadway can easily overtake your vehicle on your left.
Slower Traffic Keep Right Sign Meaning
It means that if you’re driving slowly, stay in the right lane and allow fast-moving traffic to pass. This sign advises the drivers of heavy trucks, buses, tractors, and other slow-moving vehicles on the multi-lane highway to drive in the right-most lane. So that the faster traffic on that roadway can overtake their vehicle easily. The purpose of this sign is to reduce the unnecessary lane change on the multi-lane highway.
Location and Shape
The slower traffic keep right sign looking like a vertical rectangle shape with a black border and letters on a white background. It is located on some multi-lane highways where heavy, loaded traffic and agriculture traffic move slowly.
This question appeared in the following DMV Tests.