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• 1. [Article] Development of a Statistical Algorithm for the Real-Time Prediction of Transit Vehicle Arrival Times Under Adverse Conditions

  Prior TransNow funded research by Portland State University (PSU) and the University of Washington (UW) in cooperation with Tri-Met, the transit provider for the Portland metropolitan area, has utilized ...

  Citation × Citation Citation Abstract Copy Title: Development of a Statistical Algorithm for the Real-Time Prediction of Transit Vehicle Arrival Times Under Adverse Conditions Author: Dueker, Kenneth, Kimpel, Thomas J., Strathman, James G. Year: 2001 Prior TransNow funded research by Portland State University (PSU) and the University of Washington (UW) in cooperation with Tri-Met, the transit provider for the Portland metropolitan area, has utilized a rich set of archived data from the Automatic Vehicle Location (AVL)-based Bus Dispatch System (BDS). Tri-Met is one of the few transit agencies that archive AVL data for analysis and research. Title: Development of a Statistical Algorithm for the Real-Time Prediction of Transit Vehicle Arrival Times Under Adverse Conditions Author: Dueker, Kenneth, Kimpel, Thomas J., Strathman, James G. Year: 2001 Prior TransNow funded research by Portland State University (PSU) and the University of Washington (UW) in cooperation with Tri-Met, the transit provider for the Portland metropolitan area, has utilized a rich set of archived data from the Automatic Vehicle Location (AVL)-based Bus Dispatch System (BDS). Tri-Met is one of the few transit agencies that archive AVL data for analysis and research. Close

• 2. [Article] Bus Transit Operations Control: Review and an Experiment Involving Tri-Met’s Automated Bus Dispatching System

  An operations plan contains information on the provision of transit service, including intended service levels, vehicle availability, and driver schedules. Agency resources would be utilized efficiently ...

  Citation × Citation Citation Abstract Copy Title: Bus Transit Operations Control: Review and an Experiment Involving Tri-Met’s Automated Bus Dispatching System Author: Strathman, James G., Kimpel, Thomas J., Dueker, Kenneth Year: 2000 An operations plan contains information on the provision of transit service, including intended service levels, vehicle availability, and driver schedules. Agency resources would be utilized efficiently if the operations plan could be executed without disruptions in service. When service disruptions occur, the aim of operations control is to optimize system performance given the current state of the system (Wilson et al., 1992). This typically involves actions intended to either return service to schedule or restore headways separating vehicles. Disruptions in service impose costs on transit providers in the form of reduced productivity and on passengers in the form of increased in-vehicle travel time, longer waiting time at stops, and greater uncertainty. This paper has two overall purposes. First, it provides a review of operations control principles and practices reported in the literature. Second, it reports the results of an operations control experiment whose objective was to maintain headways, or the time separation between buses on a route. The experiment was developed to explore a possible application of the automated Bus Dispatching System (BDS) recently implemented by Tri-Met, the transit provider for the Portland, Oregon, metropolitan region. Title: Bus Transit Operations Control: Review and an Experiment Involving Tri-Met’s Automated Bus Dispatching System Author: Strathman, James G., Kimpel, Thomas J., Dueker, Kenneth Year: 2000 An operations plan contains information on the provision of transit service, including intended service levels, vehicle availability, and driver schedules. Agency resources would be utilized efficiently if the operations plan could be executed without disruptions in service. When service disruptions occur, the aim of operations control is to optimize system performance given the current state of the system (Wilson et al., 1992). This typically involves actions intended to either return service to schedule or restore headways separating vehicles. Disruptions in service impose costs on transit providers in the form of reduced productivity and on passengers in the form of increased in-vehicle travel time, longer waiting time at stops, and greater uncertainty. This paper has two overall purposes. First, it provides a review of operations control principles and practices reported in the literature. Second, it reports the results of an operations control experiment whose objective was to maintain headways, or the time separation between buses on a route. The experiment was developed to explore a possible application of the automated Bus Dispatching System (BDS) recently implemented by Tri-Met, the transit provider for the Portland, Oregon, metropolitan region. Close