Features that Affect Variability of Travel Time on Bus Rapid Transit Systems

Author(s):  
LisaRene Schramm ◽  
Kari Watkins ◽  
Scott Rutherford
Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2550
Author(s):  
Andrés E. Díez ◽  
Mauricio Restrepo

This paper presents an electrical infrastructure planning method for transit systems that operate with partially grid-connected vehicles incorporating on-board batteries. First, the state-of-the-art of electric transit systems that combine grid-connected and battery-based operation is briefly described. Second, the benefits of combining a grid connection and battery supply in Bus Rapid Transit (BRT) systems are introduced. Finally, the planning method is explained and tested in a BRT route in Medellin, Colombia, using computational simulations in combination with real operational data from electric buses that are currently operating in this transit line. Unlike other methods and approaches for Battery Electric Bus (BEB) infrastructure planning, the proposed technique is system-focused, rather than solely limited to the vehicles. The objective of the technique, from the vehicle’s side, is to assist the planner in the correct sizing of batteries and power train capacity, whereas from the system side the goal is to locate and size the route sections to be electrified. These decision variables are calculated with the objective of minimizing the installed battery and achieve minimum Medium Voltage (MV) network requirements, while meeting all technical and reliability conditions. The method proved to be useful to find a minimum feasible cost solution for partially electrifying a BRT line with In-motion Charging (IMC) technology.


Author(s):  
Peter Martin ◽  
Nathan Landau

The San Pablo, California, Rapid bus service was planned 17 years ago and was implemented 13 years ago. The Rapid service, which did not include exclusive lanes, was an upgrade of previous limited-stop bus service linking the East Bay communities of San Pablo, Richmond, El Cerrito, Albany, Berkeley, Emeryville, and Oakland. The 13 years of service provide some lessons for other communities that are considering moderate (or less than full) service upgrades to bus rapid transit. The service was quick to implement and low in cost, but it has not provided the anticipated ridership benefits. The upgrades apparently were not significant enough to attract ridership increases. The transit signal priority element was not well maintained and thus has not provided the desired travel time and reliability benefits. AC Transit—which operates the service—and the corridor communities are currently reexamining further upgrades to the service. This Rapid service is well used, but more pronounced improvements are needed to fulfill ridership potential in the corridor. The lessons learned are that minor upgrades can be easily implemented, but noticeable changes are required to achieve significant ridership gains.


2018 ◽  
Vol 67 ◽  
pp. 567-583 ◽  
Author(s):  
Edgar Ruano-Daza ◽  
Carlos Cobos ◽  
Jose Torres-Jimenez ◽  
Martha Mendoza ◽  
Alexander Paz

Author(s):  
Yafeng Yin ◽  
Mark A. Miller ◽  
Avishai (Avi) Ceder

Bus rapid transit (BRT) systems combine vehicles, stations, running ways, and intelligent transportation system elements into a fully integrated system with a unique identity. It has great flexibility in incremental deployment of these BRT elements. Proposed is a deployment planning framework that provides, in a sequence of steps, a general structure for optimal deployment of BRT systems. This framework and its formulation, once operationalized, would provide transit agencies a practical tool for determining the optimal deployment strategy or strategies given budgetary, institutional, and other types of constraints associated with the corridor for which they have decided to deploy BRT. A case study example is provided to illustrate how the proposed framework would be used.


Author(s):  
Herbert S. Levinson ◽  
Samuel Zimmerman ◽  
Jennifer Clinger ◽  
James Gast

Bus rapid transit systems have grown in popularity in recent years. Spurred by federal initiatives, the spiraling cost of rail transit, and market realities, a growing number of cities have installed or are planning bus rapid transit (BRT). There is a synthesis of current experience, drawing on ongoing research conducted in a project for TCRP. The nature of BRT is described; where it operates; key features, such as running ways, stations, vehicles, intelligent transportation systems, and service patterns; performance in ridership, travel times, and land development; and the emerging implications for new systems. It is important to match transit markets to rights-of-way; achieve benefits in speed, reliability, and identity; minimize adverse impacts to street traffic, property access, and pedestrians; and obtain community support throughout an open planning process.


Author(s):  
Juan Pablo Bocarejo ◽  
Juan Miguel Velasquez ◽  
Claudia Andrea Díaz ◽  
Luis Eduardo Tafur

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