Navigating Roundabouts

A modern roundabout is a circular, unsignalized intersection where entering traffic yields to motorists circulating counterclockwise around a central island. Presently, there are three single and one double modern roundabouts operating in Livingston County.

The Road Commission has plans to construct additional modern roundabouts within Livingston County over the next several years. Since this alternative intersection is relatively new to Michigan and many drivers are unfamiliar with the "road rules" of modern roundabouts, the Livingston County Road Commission hopes the following information will assist the motoring public in navigating a modern roundabout.

If you are a motorist approaching a modern roundabout intersection:

"Road Rules" for Roundabouts
	When approaching a roundabout, slow down. For multi-lane roundabouts, look for roadside signs and pavement markings to guide you into the appropriate lane. It is important that you be in the correct lane prior to entering the roundabout.
	Always stay to the right of the splitter island (either painted or raised). Splitter islands are used to divide directional traffic on the approach to the roundabout.
	Be cautious of pedestrians as you approach the crosswalk.
	As you approach the yield line, look to your left before entering the roundabout. Vehicles within the roundabout have the right-of-way. Enter the roundabout and merge into the traffic flow once an adequate gap is available.
	All movement within the roundabout circulates counterclockwise. Never turn left into the roundabout from the yield line.
	When traveling within the roundabout, only stop to avoid a collision. You have the right-of-way over entering traffic.
	When approaching the roundabout, avoid traveling at a speed greater than the posted advisory speed.
	When circulating within a multilane roundabout, avoid changing lanes.
	Give special consideration to trucks, trailers and other large vehicles within a roundabout. Avoid passing or driving adjacent to larger vehicles within a roundabout. Large vehicles need more than one lane to circulate the roundabout.
	Sometimes you will encounter a cyclist traveling within the roundabout. Use caution, be courteous, and share the road.
	Continue through the roundabout until you reach your exit. Use your turn signal when exiting.
	As you exit the roundabout, be aware of pedestrians crossing the roadway.
	If an emergency vehicle approaches the roundabout... Directly behind you just prior to you entering the roundabout (single lane approach); Enter the roundabout and travel to your exit. After exiting the roundabout, immediately maneuver your vehicle to the right side of the road to allow the emergency vehicle to pass you. Do not stop in the roundabout. On another approach prior to you entering the roundabout; Wait for the emergency vehicle to enter and exit the roundabout before proceeding with your maneuver. While you are circulating within the roundabout; Exit the roundabout and immediately maneuver your vehicle to the right side of the road to allow the emergency vehicle to pass you. Do not stop in the roundabout.