A simulation model incorporating determination of a dynamic dilemma zone and algorithms to determine gate operation parameters for train-vehicle collision avoidance at highway-rail intersections was developed, validated, and applied to two crossings on the Chicago-St. Louis High Speed Passenger Rail Corridor. A dynamic dilemma zone 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 on changing approach speed and single vehicle in the road segment. Car-Following theory is used within the dynamic dilemma zone approach to model driver-vehicle behavior in platoons. Simulation was used to demonstrate the feasibility of determining gate operation parameters and of modeling the intersection of active safety devices, driver behavior, and vehicular and train traffic for intelligent transportation systems (ITS) implementations. Findings from the system simulation indicate that the proposed operating policy of control devices at highway-rail intersections is appropriate to eliminate high risk of a collision between vehicles within a dynamic dilemma zone and a train. For the covering abstract see ITRD E114174.
Samenvatting