SPONSOR: Oregon Department of Transportation, Oregon Transportation Research and Education Consortium

BUDGET: $140,000

ABSTRACT: A System-Wide Adaptive Ramp Metering (SWARM) system is being implemented in the Portland metropolitan area and should be operational on all corridors by April 2006. This study entails a before and after evaluation of the operational benefits of the new SWARM system using the existing data, surveillance and communications infrastructure. In particular, the study will quantify system-wide benefits in terms of savings in delay, emissions and fuel consumption and safety improvements on and off the freeway due to the implementation of the ramp metering system. This will aid in the optimal deployment of current SWARM system and will be transferable to other regions as their systems come on line in the future.

PRODUCTS:

conferenceproceedings Monsere, C., Eshel, O., and Bertini, R.L., "Empirical Evaluation of Freeway Corridor Performance Before and After System-Wide Adaptive Ramp Metering System Implementation." Presented at the Transportation Research Board of the National Academies, Washington, D.C., 2009.

report Monsere, C., Bertini, R.L., Eshel, O., and Ahn, S., "Using Archived Data to Measure Operational Benefits of a System-Wide Adaptive Ramp Metering (SWARM) System ." SPR 645, OTREC-RR-08-190, Final Report, December 2008.

presentation Monsere, C., "Using Archived ITS Data to Measure the Operational Benefits of a System-Wide Adaptive Ramp Metering System (SWARM)." PSU Friday Transportation Seminar, October 10, 2008.

presentation Monsere, C. Bertini, R.L., Eshel, O., "Using Archived ITS Data to Measure the Operational Benefits of a System-Wide Adaptive Ramp Metering System (SWARM)." Portland State University Transportation Seminar, October 10, 2008

poster Ahn, S., Bertini, R.L., Monsere, C.M., Eshel, O., and Ross, J.H., "Evaluating the Benefits of a System-Wide Adaptive Ramp-Metering Strategy in Portland." Presented at Institute of Transportation Engineers, District 6 Annual Meeting, Portland, Oregon, July 15-18, 2007.

poster Ahn, S., Bertini, R.L., Auffray, B., Ross, J.H., and Eshel, O., "Evaluating the Benefits of a System-Wide Adaptive Ramp-Metering Strategy in Portland." Presented at Transportation Research Board Annual Meeting, Washington, D.C., January 21-25, 2007.

journal Ahn, S., Bertini, R.L., Auffray, B., Ross, J.H., and Eshel, O., "Evaluating the Benefits of a System-Wide Adaptive Ramp-Metering Strategy in Portland." Transportation Research Record: Journal of the Transportation Research Board No. 2012, Transportation Research Board of the National Academies, Washington, D.C., 2007.

ONLINE APPENDICES

APPENDIX ONLINE-1: I-205 NB  TIME- SPACE SPEED CONTOUR PLOTS WITH METER ACTIVATIONS
APPENDIX ONLINE-2: I-205 NB  SPEED-FLOW PLOTS 
APPENDIX ONLINE-3: I-205 NB  SPEED-OCCUPANCY PLOTS
APPENDIX ONLINE-4: I-205 NB  FLOW-OCCUPANCY PLOTS 
APPENDIX ONLINE-5: I-205 NB  ON-RAMP FLOW - MAINLINE SPEED/FLOW PLOTS: 
APPENDIX ONLINE-6: OR-217 NB SPACE SPEED CONTOUR PLOTS WITH METER ACTIVATIONS
APPENDIX ONLINE-7: OR-217 NB SPEED-FLOW PLOTS 
APPENDIX ONLINE-8: OR-217 NB SPEED-OCCUPANCY PLOTS 
APPENDIX ONLINE-9: OR-217 NB FLOW-OCCUPANCY PLOTS 
APPENDIX ONLINE-10: OR-217 NB ON-RAMP FLOW - MAINLINE SPEED/FLOW PLOTS