Final answer:
A vehicle is permitted to move to the left side of the roadway in certain situations, such as making a left turn or passing another vehicle.
Step-by-step explanation:
Under normal circumstances, a vehicle is permitted to move to the left side of the roadway when it is safe to do so. For example, when making a left turn at an intersection or when passing another vehicle on a multi-lane road. However, it is important to always follow traffic laws and signals and to only move to the left side when it is legal and safe.