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Roundabout guide New York State Department of Transportation A Citizen ? s Guide To Roundabouts WHAT IS A ROUNDABOUT A modern roundabout is an unsignalized circular intersection engineered to maximize safety and minimize tra ?c delay Over the last few dec

New York State Department of Transportation A Citizen ? s Guide To Roundabouts WHAT IS A ROUNDABOUT A modern roundabout is an unsignalized circular intersection engineered to maximize safety and minimize tra ?c delay Over the last few decades thousands of roundabouts have been installed in Europe Australia and other parts of the world Recently they have gained support in the United States with states such as Maryland Colorado Florida Washington and more recently New York getting experience with their use and design Drivers in those states also are becoming comfortable with their use In the cities and towns where roundabouts have been built and even where the public has been hesitant about accepting them initially roundabouts ultimately have been accepted enthusiastically because of the increased safety they provide along with tra ?c calming and aesthetic bene ?ts SAFETY AND OPERATIONAL PERFORMANCE How can such impressive accident reductions be explained One reason is that there is a reduction in the number of con ict points within the facility As the ?gure below shows a standard intersection has potential vehicle-to-vehicle con icts versus for a roundabout In addition modern roundabouts are designed such that tra ?c enters at nearly right angles to the circulating tra ?c The merging lanes that characterized tra ?c circles and led to confusion over who has the right-of- way have been eliminated Third roundabouts are relatively small particularly when compared with typical tra ?c circles So tra ?c speeds are slower there are more opportunities to enter circulating tra ?c and fewer accidents result Con ict Point Illustration Delays are also reduced In the New York State DOT study SPR C- - - delay data was avialable for roundabout sites At those sites delays on approach roadways were reduced by or more NAVIGATING A ROUNDABOUT Motor Vehicles Approaching and Entering the Roundabout ? When approaching the roundabout follow the lane designation signs and choose the proper lane for multi-lane approach roadways slow down and yield to pedestrians in the crosswalk ? Look to the left Tra ?c in the roundabout has the right-of-way ? Approach the yield line and enter the roundabout when there is an adequate gap in the circulating tra ?c ow ? If another car is waiting at the yield line ahead of you do not stop in the crosswalk Keep the crosswalk clear for pedestrians ? Bicyclists are permitted to ride within the roundabout and will be riding in the lane just as other vehicles do Please do not pass a bicycle in the roundabout Exiting the Roundabout ? Once you have entered the roundabout proceed counter-clockwise to your exit You now have the right-of-way ? As you approach your exit turn on your right turn signal ? Exit the roundabout yielding to pedestrians in the crosswalk Trucks ? Drive on the circulatory roadway except large trucks and trailers may use the truck apron provided to negotiate the tight turning radius ? Drive usually with just the rear wheels on the raised