AbstractThis study introduces the concept of a “dynamic dilemma zone” (DDZ) road segment. A DDZ as opposed to a static dilemma zone is a road segment on approach to an intersection which varies in length based on fluctuations in vehicle speeds and the number of vehicles within a road segment. This is in contrast to a static dilemma zone which is based on a constant approach speed and a single vehicle in the road segment. The “dilemma” refers to the interaction of vehicle kinematics and perception–reaction time, where a vehicle could not clear the ‘intersection’ or stop before entering it. Car-following theory is used within the DDZ approach to model driver–vehicle behavior in platoons. It is found that the values of gate delay and gate interval times in car-following situations are greater than those with a single vehicle approach. The determination of the DDZ aids in defining the conditions which contribute to the likelihood of vehicle clearance (or stopping) at four quadrant gate highway–rail intersections.
Dynamic dilemma zone based on driver behavior and car-following model at highway–rail intersections
Transportation Research Part B: Methodological ; 37 , 4 ; 323-344
2002-02-26
22 pages
Article (Journal)
Electronic Resource
English
Dynamic dilemma zone based on driver behavior and car-following model at highway-rail intersections
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