What action is required when approaching a roundabout?

When approaching a roundabout, the required action is to yield to traffic that is already in the roundabout. This means that as you approach, you need to slow down and assess the traffic that is circulating within the roundabout. Vehicles within the roundabout have the right of way, so it’s important to allow them to pass before entering.

This yielding action helps to ensure a smooth flow of traffic and reduces the risk of accidents by preventing collisions at entry points. It also promotes better overall traffic management, as the roundabout is designed to allow vehicles to keep moving with fewer stops compared to traditional intersections.

The other options suggest actions that could lead to unsafe driving practices. Speeding up to merge can create conflicts with vehicles already in the roundabout, stopping unnecessarily can disrupt the flow of traffic, and changing lanes immediately might cause confusion and accidents with other drivers. Yielding is a crucial step in the proper and safe navigation of a roundabout.