Roundabouts 2.0

Roundabouts

What is a Roundabout?

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A roundabout is a type of circularintersection with yield control ofentering traffic, islands on theapproaches, and appropriate roadwaycurvature to reduce vehicle speeds.

Roundabouts 2.0

What is aRoundabout?

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Modern roundabouts are differentfrom rotaries and other trafficcircles. For example, roundaboutsare typically smaller than thelarge, high-speed rotaries still inuse in some parts of the country.In addition, roundabouts aretypically larger than neighborhoodtraffic circles used to calm traffic.

A roundabout has these characteristics:

Roundabouts 2.0

What is a Roundabout (in Waze)?

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Roundabouts, rotaries, or traffic circles, are unique segments ofroadway in the Waze router. When a driver approaches aroundabout, a specific icon is displayed in the turn direction areaof the display with a number corresponding to the exit count fromthe driver's entry into the roundabout. Manually creating a circularroad will not tell Waze to navigate the area as a roundabout.

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Types of Roundabouts

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Abnormal Roundabout, Bourne, MA

Normal Roundabout, Sedona, AZ

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Types of Roundabouts

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In Waze, there are two typesof roundabout. Normal,and Abnormal.

A roundabout has a minimum of 3 road segments, but canhave 5 or more. Sounds pretty simple, right?

The basic concept of the roundabout in Waze relativelysimple to understand for newer editors.

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What About These?

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One entrance - One exitThis is a traffic calming deviceNot a roundabout.

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What About These?

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Streets intersect, but there is no center island preventingcross-traffic turns (left-hand in the US and right-hand in theUK). There are no signs indicating a roundabout approachingthe intersection or painted on the ground.

A single road segment leading to a cul-de-sacshould be drawn as a dead end. With very large

roads it might be advisable to create a loop, but nota roundabout.

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Road Types

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To minimize inefficient routing, it is important to becareful with the road type assigned to the Roundaboutitself. Any routing penalty going from connected roadsto the roundabout must be kept to a minimum, but itshould not be too "attractive," where routing through itis encouraged when unnecessary.

It is possible to have multiple typesof roads meeting at a roundabout.

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Routing through...

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A non-normal roundabout:

*Will give you a ‘take the X exit’ (with arrows around it) instruction.*Has 5 or more nodes (Ex. Each segment of a split road connects at itsown node.)*Has irregularly placed nodes (this is covered in the wiki.)

"...take the 5th exit..."The Non-Normal Roundabout

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Routing through...

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A normal roundabout:*Will give you a ‘turn right', 'turn left’ or ‘continue straight’ instruction.*Has up to 4 nodes, and a central node.*All nodes are aligned within "normal" range of the entry point.

However, a roundabout can be both normal and non-normal at the sametime depending on your entrance node.

"...turn left on..."The Normal Roundabout

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When you create a Roundabout on the

map, EVERY road segment inside the

roundabout will be deleted!

Where'd my city go?

What Could Go Wrong?

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In Conclusion...

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The Roundabout is avital part of the map.

Please reference yourwiki link for detailedinformation.

https://wiki.waze.com/wiki/Roundabouts/USA