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- W2133197295 abstract "Effects of queues on motorists during rush hours are severe at intersections controlled by roundabouts. Traffic police are frequently used in order to optimize the traffic flow and to control queue length at such intersections. However, the question as to how efficient such system is, compared with traffic signal, is not clear from the dynamic delay point of view. In this study a criterion is being developed based on vehicular delays as the motorist join the queues and cross the stop-line. The adopted method avoids oversimplification of reality and prevents unrealistic assumptions. The data required for the study were mainly collected through video filming technique. The results, for a given set of geometric and traffic characteristics, indicate that both a police-controlled roundabout and a traffic signal act in a similar manner in terms of vehicular delay at a certain critical value. This critical value is considered to be the point of intersection between the curves representing traffic signal and roundabout on a delay-space diagram for the vehicles as they join the tail end of the queue until they cross the stop-line. Beyond the critical value, the effect of delays and buildup of queues at roundabouts will be excessive, compared to traffic signals. Before the critical value the delays at traffic signals are quite high compared to roundabouts. The study will assist the concerned authorities to operate the existing conditions, particularly the roundabouts, more efficiently. It will also be beneficial for the traffic planners and policy makers in making judicious decisions regarding control type at intersections." @default.
- W2133197295 created "2016-06-24" @default.
- W2133197295 creator A5019064023 @default.
- W2133197295 date "2003-10-01" @default.
- W2133197295 modified "2023-10-02" @default.
- W2133197295 title "Dynamic vehicular delay comparison between a police-controlled roundabout and a traffic signal" @default.
- W2133197295 cites W1547776073 @default.
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- W2133197295 doi "https://doi.org/10.1016/s0965-8564(03)00024-7" @default.
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