What should a driver do when approaching a roundabout?

When approaching a roundabout, the correct action for a driver is to yield to traffic already in the roundabout. This is crucial for maintaining a smooth flow of traffic and ensuring the safety of all road users. Yielding allows vehicles that are already circulating in the roundabout to have the right-of-way, which helps to prevent collisions and facilitates a more efficient navigation of the roundabout.

Yield signs are typically posted at the entrance to roundabouts, indicating to drivers that they must give way to incoming traffic. By doing so, drivers can make safe decisions about when to enter the roundabout, ensuring that they do not interfere with the flow of vehicles that are already present.

The other options do not reflect safe driving practices. Speeding up to enter quickly can lead to dangerous situations, as it may cause conflicts with vehicles in the roundabout. Stopping before entering might cause confusion for drivers behind you and could lead to rear-end collisions. Ignoring traffic signs is never advisable, as it disregards the rules of the road that are designed to protect everyone. Thus, yielding to traffic already in the roundabout is the correct and safest approach.