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- W594821563 abstract "Portland Metro’s South Corridor Transportation Alternatives study called for an evaluation of several transit investment strategies covering seven miles of two heavily-congested arterials; among them, Bus Rapid Transit (BRT). Specific strategies in the study permit BRT buses to receive a travel time and speed advantage over the auto. These include traffic signal preemption and queue jump lanes. To adequately quantify BRT delay savings resulting from these improvements, new intersection-based volume delay functions were used. These algorithms provided an innovative solution for estimating BRT travel time savings over competing modes in the corridor. Travel time and speed characteristics were identified to express the mobility goals in the BRT alternative. These measurements are based on estimations from traffic assignment calculations within Metro’s travel demand forecasting model. A key strategy in the BRT alternative is to separate buses from mixed traffic through intersection-related improvements. Current link-based delay functions, however, do not adequately address the travel time savings of these intersection improvements. In response, more progressive volume delay algorithms were developed to explicitly simulate link traversal time and intersection delay independently. This paper describes the key equations used along BRT queue bypass and signal preemption intersections in calculating transit travel time savings over the auto mode. It reviews the methodology for collecting and displaying travel time data for the purposes of volume-delay function development. The paper also describes how the new intersection-based delay functions are specified in Metro’s traffic assignment model." @default.
- W594821563 created "2016-06-24" @default.
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- W594821563 date "2004-03-01" @default.
- W594821563 modified "2023-09-27" @default.
- W594821563 title "Using Intersection-based Delay Algorithms to Determine BRT OperationEffectiveness" @default.
- W594821563 hasPublicationYear "2004" @default.
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