What action should motorists take at a 'mini roundabout'?

At a mini roundabout, motorists are required to yield to traffic that is already circulating on the roundabout. This is essential for maintaining the flow of traffic and preventing accidents. Yielding to vehicles already on the roundabout allows for smoother transitions and minimizes disruption, providing a clear guideline for safe navigation through these intersections.

It's important to understand that when approaching a mini roundabout, drivers should observe the traffic already in the roundabout and provide them the right of way. This rule helps prevent collisions and ensures that everyone can navigate the intersection safely. The practice of yielding in this scenario is designed to create an orderly flow of traffic and reduces confusion, which can often lead to accidents if drivers do not adhere to the correct yielding protocols.

Taking caution without yielding, as suggested in one of the other options, might lead to a situation where a driver could inadvertently cause a collision with traffic that has the right of way. Similarly, the suggestion that all vehicles should stop before entering would unnecessarily halt traffic and lead to congestion at these intersections. Therefore, yielding to traffic already on the roundabout is the correct and safest action to take.