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Regional Operations Forum Safety and Operations

Accelerating solutions for highway safety, renewal, reliability, and capacity. Regional Operations Forum Safety and Operations. Linking Safety and Operations. State DOTs facing numerous challenges Prior to ISTEA, DOTs focused separately on Construction Maintenance Operations Safety

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Regional Operations Forum Safety and Operations

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  1. Accelerating solutions for highway safety, renewal, reliability, and capacity Regional Operations Forum Safety and Operations

  2. Linking Safety and Operations • State DOTs facing numerous challenges • Prior to ISTEA, DOTs focused separately on • Construction • Maintenance • Operations • Safety • Limited resources has shifted focus • Operating and maintaining system

  3. Why Link Safety and Operations? • Highway fatalities and serious injuries at unacceptable levels • 29,757 fatalities in 2011 • Press coverage not significant for highway fatalities • Boeing 747-400 carries 520 passengers • 2011 highway fatalities = 56 airline crashes

  4. U.S. Fatal Crash Trends Source: NHTSA FARS Data

  5. VMT Trends Source: NHTSA FARS Data

  6. Fatal Crash Rate Trends Source: NHTSA FARS Data

  7. U.S. Injury Crash Trends

  8. Injury Crash Rate Trends

  9. Traffic Congestion • Congestion continues to plague our transportation system • 2.9 billion gallons of wasted fuel • Enough to fill 4 superdomes • 5.5 billion hours of wasted time • Significantly impacts communities • Quality of life • Safety • Health

  10. Types of Traffic Congestion • Recurring congestion • Predictable in cause • Location • Time of day • Duration • Surge overwhelms roadway’s capacity • Examples • Lane drops, grades, narrow lanes • Poorly timed traffic signals

  11. Types of Traffic Congestion • Non-recurring congestion • Unpredictable in nature • Location • Time of day • Duration • Examples • Crashes, disabled vehicles, weather • Work zones and planned special events • Dramatically reduces capacity and reliability

  12. MAP-21 Requirements • Creates national goals and performance management measures • Safety • Congestion reduction • System reliability • Performance targets currently being developed

  13. Safety and Throughput • Low cost operational improvements can create significant improvements in traffic flow • Equate to having safer roads • Low cost operational improvements • Signal phasing (permissive vs. protected) • Signal timings and progression • Appropriate clearance intervals • Pavement markings, signing, and delineation • Installation or extension of turn lane

  14. Opportunities to Affect Safety and Operations determining where safety and operations are most effective

  15. Static Data

  16. Real Time Data Acquisition

  17. Real Time Data Acquisition

  18. Real Time Data Acquisition

  19. Real Time Data Acquisition

  20. Roadway Weather Information

  21. Opportunities to Affect Safety and Operations Analysis techniques

  22. Crash Locations Through GIS

  23. Intersection Crash Analysis

  24. Crash Density Maps

  25. Peak Hour Travel Time Index

  26. Crash Density with AM Peak Travel Time Index

  27. Project Examples

  28. Median/Pedestrian Refuge

  29. Road Diets

  30. Access Management

  31. Turn Lanes

  32. Signal Timing and Improvements

  33. Ramp Metering

  34. Variable Speed Limits

  35. Adaptive Signal Timing

  36. Advanced Traveler Information Systems

  37. Incident Management

  38. End of Queue Detection Systems

  39. Advanced Traffic Management

  40. SHRP 2 Project L07

  41. Group Discussion

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