Which statement about roundabouts is true?

• A. They speed up traffic by reducing yielding requirements.
• B. They require stopping at every approach.
• C. They help traffic flow by yielding to vehicles in the circle and entering when safe.
• D. They are only used on highways.

Answer: (C)

Roundabouts keep traffic moving safely by letting drivers enter only when there’s a safe gap and by giving priority to vehicles already inside the circle. The essential rule is to yield to traffic in the circle and merge when it’s safe, which creates smoother flow and reduces stop-and-go crashes. This is why the statement about helping traffic flow by yielding to vehicles in the circle and entering when safe is the true one. It isn’t about speeding up traffic by reducing yielding requirements—entering still requires waiting for a safe gap. You don’t stop at every approach; you yield as needed and proceed when safe. And roundabouts aren’t limited to highways; they’re used at many different kinds of intersections.