What is the correct action to take when approaching a roundabout?

When approaching a roundabout, the correct action is to yield to drivers already in the roundabout. This means that as you approach, you must look for vehicles circulating within the roundabout and give them the right of way. This rule is fundamental to ensure a smooth flow of traffic and to prevent collisions.

Yielding to the vehicles already in the roundabout allows those drivers to maintain their speed and ensures that the roundabout operates effectively, minimizing potential traffic delays and accidents. In many roundabouts, there are signs and road markings designed to reinforce this rule, indicating to drivers when they must yield.

By not yielding, a driver could disrupt the flow of traffic and create hazardous conditions, potentially leading to accidents. It's crucial to remember that the basic function of a roundabout is to enhance safety by reducing the likelihood of high-speed collisions and to facilitate smoother transitions for vehicles traveling in different directions.