SWOV Catalogus


Dynamic dilemma zone based on driver behavior and car-following model at highway-rail intersections.
I E117615 /73 /83 / ITRD E117615
Moon, Y.J. & Coleman III, F.
Transportation Research, Part B: Methodological. 2003 /05. 37b(4) Pp323-44 (13 Refs.)

Samenvatting This 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. (Author/publisher).
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