Yes, vehicles are able to move more quickly through the intersection because of the "yield at entry". Drivers only have to watch for traffic from the left, and if there is an adequate gap available, they can enter the intersection without stopping. Once in the roundabout, drivers have the right-of-way, so they will not have to stop or yield to exit. If the driver does need to yield at entry to traffic inside the roundabout, their delays are brief and typically less than the time they would have been delayed at a traffic signal.