Интеллект. Инновации. Инвестиции (Dec 2019)
The left-turn traffic flow channeling technique at asignaled crossing
Abstract
There are not clearly defined instructions for use traffic channeling technique in the normative documentation of the Russian Federation and foreign countries and in the specialized literature. Also there is not the established terminology relative to the channeling of traffic flow on the intersection and instructions for determination of its parameters as well. The goal of the research is how to increase overall intersection efficiency by the traffic channeling technique. This work contains justification of the concept of the local extension for the traffic channeling and the methodic of its length calculation in depend on different influencing factors. To reach these goals there is the following hypothesis: the optimal length of local extension depends on transport demand for left-turn traffic per one traffic light cycle and average dynamic size of vehicles in the traffic flow. According to the hypothesis the calculation of the length of the local road extension for several roads of the road network of Tyumen city on the basis of the collected data has been made. Simulation modeling in the software PTV Vissim (micromodeling) has been used to prove the calculations validity. The simulation models for the current situation at intersection shave been developed based on the data obtained for different roads. The effectiveness of the project solutions has been evaluated. Set the dependency of optimal length of the local road extension on relative transport demand per one traffic light cycle has been highly likely proved by the simulation modeling results. Therefore it is possible to calculate the optimal length of the local road extension before a signaled crossing based on the mathematical model obtained. Future research is supposed the determination different factors effect on the overall efficiency of an intersection due to the channeling technique.
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