What must drivers do when approaching a roundabout?

When approaching a roundabout, drivers must slow down and yield to pedestrians and vehicles already in the roundabout. This is crucial for maintaining the flow of traffic and ensuring safety for both drivers and pedestrians. Roundabouts are designed to facilitate the continuous movement of vehicles while reducing the likelihood of serious collisions, and yielding to traffic that's already in the roundabout helps achieve that goal.

Additionally, yielding to pedestrians is essential because many roundabouts include crosswalks where pedestrians may be crossing the road. It’s important to be aware of both the vehicles and pedestrians in this situation to ensure everyone can navigate safely.

The other options suggest inappropriate actions: speeding up could potentially cause accidents; ignoring traffic signals contradicts the principles of safe driving; and stopping completely before entering can disrupt the flow and create confusion. Understanding the correct approach to navigating roundabouts is important for safe driving practices.