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Congestion Mitigation Programs and Strategies

Congestion Mitigation Programs and Strategies. Craig Mizera Advanced Highway Design CE 550 April 2, 2007. Outline. Overview of Congestion Effects of Congestion Solving the Problem. What is Congestion?.

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Congestion Mitigation Programs and Strategies

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  1. Congestion MitigationPrograms and Strategies Craig Mizera Advanced Highway Design CE 550 April 2, 2007

  2. Outline • Overview of Congestion • Effects of Congestion • Solving the Problem

  3. What is Congestion? • Highway Congestion occurs when the traffic demand approaches or surpasses the available capacity. • Measurements of the level of service, speed, travel time, and delay are used to express the severity.

  4. What is Congestion?

  5. Expected Congestion in the Future

  6. Sources of Congestion • Bottlenecks • Intersections & Interchanges • Work Zones • Weather • Traffic Incidents • Special Events

  7. Sources of Congestion FHWA

  8. Effects of Congestion • Society • Freight • Environment

  9. Society • TTI Traffic Congestion Study • 85 Urban areas • 3.7 billion hours of delay • 43 hrs/person/yr • Wasted time and Fuel • $63 million • $384 /person/yr

  10. Freight • 243 million hours of delay per year • $7.8 billion/year • Freight movement increase • 3% annually through 2020

  11. Freight FHWA

  12. Environment • Burning Excess Fuel • Pollutants • Nitrogen Oxides • Carbon Monoxide • Hydrocarbons

  13. Highway Congestion Solutions • Passenger cars • increase 2.5% annually • Truck freight movement • increase 3% annually

  14. Highway Congestion Solutions • Government Efforts • Designs and Strategies • Intelligent Transportation Systems • Rapid Urban Flexible System • Traffic Forecasting Strategy

  15. Government Programs • National Strategy to Reduce Congestion on America’s Transportation Network Plan • Congestion Initiative • Work Zone Mobility • Highways for LIFE

  16. Congestion Initiative • Introduced May 2006 • Six components • Urban partnership agreements • Public private partnerships • Corridors of the future • Reducing border congestion • Reducing S. Cal. Freight Congestion • Increasing aviation capacity

  17. Work Zone Mobility • Construction-related Congestion • Accelerated Construction Techniques • Night Work • ITS • Share successful ideas and strategies

  18. Highways for LIFE • Longer-lasting highway infrastructure using Innovations to accomplish the Fast construction of Efficient and Safe Highways and Bridges • 3 Main Goals • Improving Safety • Reduce Congestion • Improve Quality

  19. Design Efforts and Strategies • Widening the Roadway • High Occupancy Vehicle (HOV) Lanes • Ramp Management • Separate and Reversible Lanes • Innovative Designs • Tunnels • “Stacking” Lanes

  20. Design Efforts and Strategies • Concentrate on new ideas • In the Past…….. • Spent $340 billion dollars • Public transit • Accounts for 2% of the trips

  21. Widening the Roadway • Wider is not always better. • Limited ROW • Expensive ROW

  22. HOV Lanes • Special Lanes • 15 million people carpool • 84 million drive alone • High Occupancy Toll (HOT) Lanes • Prices fluctuate with traffic volumes • 3Ps

  23. Ramp Management • Control the number of vehicles • Signs • Traffic signals • Gates • Versatile • Sufficient Planning • Can create spillback to other routes

  24. Ramp Management • Minneapolis • B/C Ratio 15:1 • Reduced emissions by 1160 tons/year

  25. Separate Lanes • Ignored for years • Federal Regulations forbid them • National System of Interstate and Defense Highways • Build to different standards • Allow Larger Trucks

  26. Tunnels • Advances in tunnel technologies • Faster Construction • Lower cost

  27. “Stacking” Lanes • Double-deck • Low ceilings 7 ft • 10 ft lanes • 80% of traffic passenger vehicles

  28. Intelligent Transportation System • System that uses electronics, communications, or information processing singly or together to improve the efficiency or safety of a transportation system • FHWA • Educate Drivers • Incidents • Work Zones • Automated tolls

  29. Rapid Urban Flexible System • Palle Jensen • Denmark • Dual Mode System • Regular Roadway • Manually controlled • Guideway • Automatically controlled

  30. Rapid Urban Flexible System

  31. Rapid Urban Flexible System

  32. Rapid Urban Flexible System

  33. Rapid Urban Flexible System • Different sizes • Maxi-ruf • 10 seats • Midi-ruf • 5 seats • RUF • 4 seats • Mini-ruf • 2 seats

  34. Rapid Urban Flexible System • Los Angeles • $9.55 billion • Seattle • $1.2 billion

  35. Planning and Forecasting Future Traffic • Traditional traffic forecasting • Collect data • Region’s travel demand model

  36. Planning and Forecasting Future Traffic • Goal-oriented Planning Process • Developed in Texas and Georgia • Need for additional projects • Estimate the costs and benefits • Allowed the public to observe the range of project costs and how they affected congestion

  37. Conclusion “One of the most promising options for combating out-of-control congestion is to turn to technology and invest in innovation.” • Secretary of Transportation Mary Peters 2007 TRB

  38. QUESTIONS AND COMMENTS

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