Abstract
This study evaluates the effect of prioritizing right-turning vehicles in traffic flow not only at an artificial intersection but also at an existing corridor equipped with several intersections. The traffic simulator used in this study quantifies the effect of prioritizing a right-turning vehicle on traffic efficiency, safety, and the environment of an intersection. The ratio of prioritizing a right-turning vehicle is given as stochastic probability density functions. Numerical analysis showed that low traffic demand and low probability of prioritizing a right-turning vehicle brought significant improvement to traffic efficiency, safety and the environment. The effect was as significant as installing a general right-turn pocket and its special signal phase. It was concluded that humans have potential to improve this efficiency as significant as that of when a right-turn pocket is installed, which is costly and time-consuming.
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