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Home » Cycling skills » Traffic » Navigating traffic circles & roundabouts

Navigating traffic circles & roundabouts

navigating a traffic circle on a bicycle
From the Urban Street Design Guide Published by the National Association of City Transportation Officials (NACTO) © NACTO, All Rights Reserved. Used with permission.

right of way at a traffic circleRoundabouts and traffic circles (also known as traffic diverters or rotary traffic islands) are a type of roadway infrastructure we’re seeing more of in North America. Originated in Europe, these installations work very effectively there.

As most people in North America are not familiar with them, and are uncertain how to safely negotiate them, they require additional caution.

Note that a configuration for a two-lane roadway (one lane of traffic in either direction) is generally called a traffic circle or traffic diverter, while on a roadway with four or more lanes (two lanes or more of traffic in either direction) it is referred to as a roundabout.

In this section, we provide some information on the rules of the road pertaining to roundabouts and similar installations, as well as some tips that are useful to cyclists, motorists and pedestrians encountering them.

(Note: the content provided here by The Center for Cycling Education is for information purposes only, and is not intended to be taken as legal counsel.)

Right of way at a traffic circle or roundabout, for motorists and cyclists.

This is essentially the same as at 4-way stops:

  • When approaching a circle, reduce speed and be ready to yield to pedestrians and to other road users.
  • Right of way is to be yielded in the following order, to:
    • pedestrians showing intention to cross;
    • traffic already in the circle (watch for those entering directly opposite you i.e., ‘oncoming’ traffic);
    • the first road user approaching the circle.
  • If arriving at the circle at the same time as another road user, the road user on the right is to be given right of way. You can prevent confusion in this instance by altering speed (safely) so as to not arrive at the same time as another.
  • If you have right of way, be prepared to stop in case another road user is unaware of, or ignores, the rules.

Signal your intentions when approaching, and when leaving, a roundabout or traffic circle:

  • If turning right, signal right on entering, and again in advance of leaving the circle.
  • If going straight, do not signal on approaching the circle, but signal right as you approach your exit.
  • If going left, give a left-turn signal on approaching the circle, then signal right as you approach your exit.

Important tips for cyclists:

Be assertive when approaching a traffic circle, and be ready to take your turn entering it if you have the right of way (see above). Continue pedaling to show intention to proceed. However, be prepared — and don’t hesitate — to stop if a motorist (or another cyclist) is not aware of, or is disregarding, the right of way rule. Cover the brake levers with your fingers to ensure you can react quickly.

It is important to approach the traffic circle in the center of your lane. This is necessary for two reasons: 1) to ensure that you are more visible to other traffic approaching the circle (i.e., not tucked out of sight against the curb) and, 2) to ensure that you do not encourage others to pass you on your left while you are in the circle.

Important tips for pedestrians:

Be aware that when you cross a crosswalk at a four-way stop (which are usually marked crosswalks), approaching traffic is required to stop, giving the driver or cyclist a better chance to see you and yield to you.

When crossing at a traffic circle or roundabout, crossings are often not marked, traffic is only required to slow down and not stop, and stepping into the roadway puts you in the path of any vehicle in the circle, whether or not they are turning onto the street you are crossing. Crossing any roadway requires caution, but these installations require extra vigilance.


Other complimentary sections from our online courses. link opens in new window

  • Traffic skills
    • Changing lanes in traffic
    • Triggering a traffic light on your bike
    • Navigating traffic circles & roundabouts
    • Riding with kids

  • Bike handling skills
    • Proper braking technique
    • Shifting gears

  • Equipment
    • Parts of the bike
    • Checking your bicycle for safety
    • Choosing & adjusting your bicycle helmet

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6 months ago

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Edward Pullman is a long-time rider and active advocate, and someone who can provide good advice.We can always learn more, and I'll be joining in to do just that. ... See MoreSee Less

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8 months ago

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"Google Maps has announced significant updates to its cycling route information, allowing users to better prepare for a journey on two wheels. Additional details include warnings for heavy traffic and steep hills as well as enabling ‘easier’ comparisons between bike routes."www.cyclingweekly.com/products/google-maps-upgrades-its-cycle-navigation-with-added-detail-includ... ... See MoreSee Less

Google Maps upgrades its cycle navigation with added detail - including warnings of heavy traffic and steep hills

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Bike routes will now highlight potential difficulties as well as supplying detailed information about road type and providing comparisons
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11 months ago

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When you ride up to a traffic light and nothing happens, and you wait and wait...It doesn't happen to people driving a car, yet there are ways of getting the light to change. (And if it doesn't, here's what you can do.)thecce.org/cycling-skills/traffic/triggering-a-traffic-light-on-your-bike/ ... See MoreSee Less

Triggering a traffic light on your bike | The Center for Cycling Education

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How to get an unresponsive traffic light to detect your bicycle.
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Now available: an extensive update to our Traffic Smarts for Cyclists courses! Separate versions for Canada and the USA.Act now before the upcoming price increase.thecce.org/online-courses/ ... See MoreSee Less

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