Journal ArticleDOI
Alterations to the transyt-7f model to represent near-side transit stops
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TLDR
In this paper, a deterministic simulation model is proposed to represent the effect of near-side transit stops on the other traffic; this representation covers both total and partial blockage of the approaches during the transit loading.Abstract:
Transit vehicles stopping to load/unload passengers on-line at a signalized intersection can obstruct the flow of other vehicles. The TRANSYT model ignores the delay to other traffic caused by this loading/unloading process. This can cause TRANSYT to use incorrect flow profiles, resulting in signal timings that cater to these profiles rather than the actual ones. This paper describes a new model for representing near-side transit stops in lanes shared by public transit and private vehicles, and its implementation into the TRANSYT-7F program. The results of an initial application of the proposed model are also described. The proposed model, which is a deterministic simulation model, is able to represent the effect of near-side transit stops on the other traffic; this representation covers both total and partial blockage of the approaches during the transit loading. The procedure has been incorporated into the TRANSYT-7F program. This allows appropriate representation of the adverse effects of transit loading on-line during a green phase. It thus encourages the TRANSYT optimizer to push transit loading to the red phases.read more
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Journal ArticleDOI
Dynamic Right-of-Way for Transit Vehicles: Integrated Modeling Approach for Optimizing Signal Control on Mixed Traffic Arterials
TL;DR: The dynamic right of way is introduced—the dynamic right-of-way, which serves the demands of public transit and general traffic using an integrated model for evaluation and optimization and the potential for achieving substantial reductions in delays is demonstrated.
References
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Journal ArticleDOI
Two-point estimates in probabilities
TL;DR: A simple procedure for computing the first three moments which overcome the deficiencies of deterministic treatment by sacrificing the accuracy of a rigorous probabilistic analysis; the procedure also furnishes an approximate and an equally simple approach to Bayesian statistics.
Journal ArticleDOI
Representing stochastic transit dwell times in traffic signal optimization
Peter Joyce,Sam Yagar +1 more
TL;DR: It has been demonstrated that while the TRANSYT traffic model simulates transit vehicles in mixed traffic operation, it does not adequately consider the effects of bus or streetcar stops on the travelled roadway near signalized intersections.
Journal ArticleDOI
An application of transyt for mixed car/streetcar operation
Peter Joyce,Sam Yagar +1 more
TL;DR: A modelling procedure is applied to a 6 kilometre corridor of mixed traffic operation in Toronto, Canada, to estimate the potential effects of incorporating streetcar operations in the optimization of fixed-time traffic signals.
Journal Article
Demonstration of the characteristics of the transyt-7f model as modified to represent near-side transit stops
TL;DR: In this paper, the TRANSYT-7F model has been altered to represent the common case of near-side transit stops in shared lanes, and the authors demonstrate the operation and principal characteristics of the new simulation model by describing its application to a sample network.
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