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Congestion Reduction Using Intelligent Transportation Systems

Congestion Reduction Using Intelligent Transportation Systems. Ben Sperry University of Evansville University of Evansville MESCON March 25, 2006. What is Congestion?. Point where vehicle flow exceeds roadway capacity Recurring-”Bottlenecks” Intersection of major highways

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Congestion Reduction Using Intelligent Transportation Systems

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  1. Congestion Reduction Using Intelligent Transportation Systems Ben Sperry University of Evansville University of Evansville MESCON March 25, 2006

  2. What is Congestion? • Point where vehicle flow exceeds roadway capacity • Recurring-”Bottlenecks” • Intersection of major highways • Decrease in lanes • Non-recurring • Accidents • Construction zones • Sporting events/concerts • Bad weather MESCON

  3. Sources of Congestion Source: Cambridge Systematics MESCON

  4. Costs of Congestion Source: Texas Transportation Institute MESCON

  5. Congestion and Emissions Source: OSCAR End User Workshop MESCON

  6. Intelligent Transportation Systems (ITS) • Integrate current technologies to help solve surface transportation problems. • Components called Architecture • Controlled by Transportation Management Center MESCON

  7. Freeway Management Systems MESCON

  8. Traffic Surveillance • Monitors traffic conditions on freeway • Uses cameras or imbedded sensors • Also tracks weather, emergency vehicles • Monitor emissions • Benefits: • Houston-over 21,000 annual delay hours saved • Would have been mitigated with 150 additional miles of lane • Increase vehicle throughput 12-20 percent • B/C ratios between 10:1-12:1 MESCON

  9. Ramp Metering • Controls flow of traffic onto freeway by a gate • Can be fixed or adjusted as conditions warrant • Benefits (Minneapolis-St. Paul): • 25,000 annual hours of travel time • 2.6 million hours of delay saved • Annual emission reduction of 1160 tons • B/C ratio of 15:1 Ramp Meter Source: Washington State DOT MESCON

  10. Lane Management • Use extra lanes on freeway. • Bidirectional • Emergency clearing/storing • HOV/Transit Vehicles • Traffic diversion Source: FHWA MESCON

  11. Incident Management • Reduces the time that accident blocks roadway • Coordinates emergency response to accidents • Incident Response Vehicle • Benefits (emissions reduced in San Francisco): • 77 Tons of CO • 10 Tons of NOx • 7.6 Tons of hydrocarbons Source: AASHTO MESCON

  12. Information Dissemination • Pre-Trip: • Internet, television, “511” info line, radio • Modal choice • Route selection • Travel times • En-Route: • Real time information • Accidents • Changing roadway conditions Source: North Dakota DOT MESCON

  13. ITS Deployment • Currently deployed in over 2400 jurisdictional areas • 50% of freeway miles are monitored • 57% of freeways covered by incident management • 48% of freeways have information disseminated MESCON

  14. SAFETEA-LU • Signed into law August 10, 2005 • Legislative Provisions: • Expanded Transportation Monitoring • HOV Lane Guidelines • Funding Allocations • $550 Million for ITS Research • $8.5 Billion for CMAQ Program Source: US House of Representatives MESCON

  15. Questions?

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