Two-way Cycle Crossings at Non-signalized Intersections and Roundabouts

Søren U. Jensen, Thomas S. Buch, Paper from 4th International Cycling Safety Conference, September 2015

ABSTRACT

Cycle paths running along roads may cross side roads near intersections. Some 776 sites where a two-way cycle path crosses a road close to a non-signalized intersection or roundabout have been used for accident modelling. Only cycle paths that run parallel and less than 15 meters from a road are included.

A total of 384 accidents occurred at the 776 two-way cycle crossings including 188 injury accidents. Traffic counts of both path, road and intersection traffic were performed. Negative binomial accident models were estimated using traffic counts and design features as independent variables.

On average accident rates are 0.09 accidents per million motor vehicles crossing cycle paths, 0.47 bicycle accidents per million cyclists crossing roads and 3.48 moped accidents per million moped riders crossing roads. Three types of cycle crossings have very different accident rates.

No accidents occurred at 50 grade-separated crossings meaning that accident rates are zero and it is the safest type of crossing. At 152 sites path users have to yield to road users and here accident rates are 0.01 per million motor vehicles and 0.21 per million cyclists/moped riders. The 152 sites are many times safer than 539 sites where road users have to yield to path users and where accident rates are 0.18 per million motor vehicles and 0.86 per million cyclists/moped riders. The accident models indicate that signage and marking of the two-way cycle crossings influence safety at the crossings. Models also indicate that traffic volumes on roads parallel to paths, type and design of intersections, and the distance between intersections and two-way cycle crossings influence safety at the crossings.

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