Cyclist Roundabouts (C-Roundabout): A New Zealand Approach

Equipment and On Road Behaviour, Laws and Rules. Cycling Promotion and Advocacy

Cyclist Roundabouts (C-Roundabout): A New Zealand Approach

Postby Aushiker » Fri May 10, 2013 10:23 am

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A recent paper out of New Zealand reports on a trial of a cyclist roundabout design or c-roundabout undertaken in Auckland, New Zealand by the New Zealand Transport Agency. The cyclist roundabout design was installed at the Palomino Dr/Sturges Rd roundabout in Auckland, New Zealand. The operation of the C-roundabout was evaluated in terms of its safety, capacity, and the opinions of cyclists,pedestrians and car drivers.

The full paper can be download from my Dropbox and/or the executive summary has been reproduced on my blog.

The two recommendations from the case study are:

1. The principles applied to the C-roundabouts in order to reduce approach and circulating speeds should be considered in other locations where a more cyclist-friendly layout is desirable – ie where cyclists form a significant proportion of the local network traffic. However, it is important to note that an important contribution to the safe and efficient operation of a roundabout is that of a similar treatment on all approach legs, producing a well-balanced intersection. Further research into the key features of the C-roundabout design should be undertaken.
2. Single-lane roundabouts can be converted to narrow two-lane roundabouts for capacity reasons at low cost compared with that of the standard design. Further research on the safety implication of this conversion is needed.

Regards
Andrew
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