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- 2008379150 abstract "Modern traffic signal control systems provide emergency vehicle preemption (EVP) capabilities by utilizing advanced sensors and communication technologies. EVP strategies are widely implemented by urban transportation management agencies. One of the challenges of implementing EVP under coordinated-actuated signal systems is selecting the best coordination recovery strategy at the end of preemption such that disruptions to the normal traffic signal operations are minimized. Similarly, time-of-day (TOD) traffic operations also produce such disruptions while transitioning between TOD modes and require returning to coordination. This report presents the evaluation results of various EVP recovery and TOD transition strategies in an urban corridor including four coordinated-actuated signals along Lee Jackson Memorial Highway in Chantilly, Virginia. Since field testing of various preemption and TOD transition strategies is impractical, the study was performed using hardware-in-the-loop simulation, which consisted of a well-calibrated VISSIM microscopic simulation model, four traffic controllers, and four controller interface devices. The study results showed that advanced controllers (e.g., 2070 and ASC/3) have advantages over the 170 controller for the EVP recovery strategies, while the 170 controller's TOD transition strategies outperformed those of the newer controllers.".
- 2008379150 contributor B11227249.
- 2008379150 contributor B11227250.
- 2008379150 contributor B11227251.
- 2008379150 created "2008.".
- 2008379150 date "2008".
- 2008379150 date "2008.".
- 2008379150 dateCopyrighted "2008.".
- 2008379150 description "Final contract report.".
- 2008379150 description "Includes bibliographical references (p. 34-35).".
- 2008379150 description "Modern traffic signal control systems provide emergency vehicle preemption (EVP) capabilities by utilizing advanced sensors and communication technologies. EVP strategies are widely implemented by urban transportation management agencies. One of the challenges of implementing EVP under coordinated-actuated signal systems is selecting the best coordination recovery strategy at the end of preemption such that disruptions to the normal traffic signal operations are minimized. Similarly, time-of-day (TOD) traffic operations also produce such disruptions while transitioning between TOD modes and require returning to coordination. This report presents the evaluation results of various EVP recovery and TOD transition strategies in an urban corridor including four coordinated-actuated signals along Lee Jackson Memorial Highway in Chantilly, Virginia. Since field testing of various preemption and TOD transition strategies is impractical, the study was performed using hardware-in-the-loop simulation, which consisted of a well-calibrated VISSIM microscopic simulation model, four traffic controllers, and four controller interface devices. The study results showed that advanced controllers (e.g., 2070 and ASC/3) have advantages over the 170 controller for the EVP recovery strategies, while the 170 controller's TOD transition strategies outperformed those of the newer controllers.".
- 2008379150 description "Sponsored by Virginia Department of Transportation 80636".
- 2008379150 extent "iii, 37 p. :".
- 2008379150 hasFormat "Also available online.".
- 2008379150 identifier 08-cr9.pdf.
- 2008379150 isFormatOf "Also available online.".
- 2008379150 isPartOf "VTRC (Series) ; 08-CR9.".
- 2008379150 isPartOf "VTRC ; 08-CR9".
- 2008379150 issued "2008".
- 2008379150 issued "2008.".
- 2008379150 language "eng".
- 2008379150 publisher "Charlottesville, Va. : Virginia Transportation Research Council,".
- 2008379150 relation "Also available online.".
- 2008379150 subject "Electronic traffic controls Evaluation.".
- 2008379150 subject "Emergency vehicles.".
- 2008379150 subject "TE228.3 .P37 2008".
- 2008379150 subject "Traffic signal control systems. trt".
- 2008379150 subject "Traffic signal controllers. trt".
- 2008379150 subject "Traffic signal preemption.".
- 2008379150 type "text".