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A Study for Minimum Requirements Time of Bicycle Signal Clearance Interval  

Joo, Doo-Hwan (도로교통공단)
Yeo, Woon-Woong (도로교통공단)
Hyun, Cheol-Seung (도로교통공단)
Park, Boo-Hee ((주)월드테크코리아)
Lee, Choul-Ki (아주대학교 ITS대학원)
Ha, Dong-Ik (인트라스)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.9, no.5, 2010 , pp. 59-66 More about this Journal
Abstract
Korea have experienced a very rapid increase in police-reported collisions between bicycle and motor vehicles over the past decade. Even though cycling accidents are increasing, efforts to make urban areas more accomodating to cyclists are seldom formed. Clearance intervals(including both the yellow change and all-red clearance intervals) at signalized intersections that are of inadequate lengths for bicycles may cause accidents. Data on bicycling speed, acceleration and deceleration were tested and analyzed on the flat. Using the results of the analysis and based on the AASHTO's equation of the bicycle clearance interval, a methodology is got for calculation safe clearance intervals for bicycle riders. The clearance interval call for bicycles will be larger or same than for vehicles because of the speed, acceleration and deceleration difference. Adequate bicycle speed, acceleration and deceleration for korean bicycle users is presented in this paper. It is hoped that traffic engineers to provide safe intersection clearance time for bicycles use the results of this paper.
Keywords
Clearance interval; deceleration; dillema zone; bike signal; normal cruising speed;
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  • Reference
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