What is the maximum design speed through a roundabout in urban areas?

The maximum design speed for roundabouts in urban areas is typically set at approximately 40 kilometers per hour. This speed is considered appropriate to ensure safe navigation through the roundabout while accommodating the mixed traffic conditions commonly found in urban environments. At this speed, drivers can effectively judge gaps in traffic when entering or exiting, and it allows for sufficient reaction time in case of unforeseen circumstances.

Designing roundabouts with a maximum speed of 40 kph also takes into account safety features such as deflection and the curvature of the road, which help in managing vehicle speeds naturally, encouraging a more cautious driving behavior. Additionally, roundabouts are designed to enhance traffic flow and minimize potential conflict points, which can be better achieved at this speed, promoting efficiency in urban traffic systems while maintaining safety for all road users, including pedestrians and cyclists.