If you are driving slower than other traffic on the interstate, which lane should you use?

Using the right lane when driving slower than other traffic on the interstate is the correct choice because it follows the principle of maintaining traffic flow and safety on the highway. The right lane is designated for slower-moving vehicles, allowing faster vehicles to pass on the left. This lane usage helps prevent congestion and reduces the risk of accidents, as quicker traffic can safely maneuver around those driving at lower speeds.

The left lane is typically reserved for passing, and using it when driving slower can frustrate faster drivers and create dangerous situations. Similarly, the center lane, while a potential option, is not the ideal choice for slower traffic since it's meant for general use and may lead to unintended blockages. Using any lane indiscriminately can lead to confusion and disrupt the overall flow of traffic, making it less safe for everyone on the road.