What should drivers do when approaching a roundabout?

When approaching a roundabout, the correct action is to yield to the traffic that is already circulating within the roundabout and signal your intentions when you are ready to exit. Yielding is essential because vehicles inside the roundabout have the right of way, which helps maintain smooth flow and enhances safety by reducing the likelihood of collisions at the roundabout.

Additionally, signaling when you exit the roundabout is crucial for informing other drivers of your intentions, thereby promoting better communication on the road and helping to prevent misunderstandings that can lead to accidents. This practice aids in the overall efficiency of the roundabout by allowing merging traffic to adjust their speed and positioning accordingly.

The other options do not align with safe driving practices. Accelerating to merge quickly can lead to dangerous situations, stopping completely isn't necessary and can disrupt the flow of traffic, and ignoring traffic signs undermines traffic regulations that are in place to ensure everyone's safety on the road.