What should you do when approaching a roundabout?

When approaching a roundabout, yielding to cars already in the roundabout is the correct action to take. This is crucial because roundabouts are designed to facilitate a smooth flow of traffic by allowing vehicles already in the roundabout the right of way. By yielding, you ensure that you do not disrupt the traffic flow and minimize the risk of collisions.

The design of roundabouts is intended to enhance safety and efficiency. Vehicles within the roundabout are typically traveling at lower speeds compared to traditional intersections, which helps reduce the severity of accidents if they occur. By yielding, you give priority to those already in the roundabout, allowing them to proceed, while you wait for a safe gap to enter.

In contrast, speeding up to merge with traffic can lead to dangerous situations and increase the likelihood of accidents. Honking your horn is generally not advisable as a means of communication in this setting; it can create confusion and potentially escalate tensions among drivers. Entering without stopping might cause you to disrupt the traffic inside the roundabout, which is counter to its design purpose and can lead to accidents.