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New Hampshire Strategic Highway Safety Plan

New Hampshire Strategic Highway Safety Plan. Improve Safety Data Seat Belt Use Teen Drivers Lane Departure Reckless Driving Impaired Driving Special Users EMS. Nine Safety Countermeasures. Road Safety Audits Rumble Strips and Rumble Stripes Median Barriers Safety Edge Roundabouts

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New Hampshire Strategic Highway Safety Plan

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  1. New HampshireStrategic Highway Safety Plan Improve Safety Data Seat Belt Use Teen Drivers Lane Departure Reckless Driving Impaired Driving Special Users EMS

  2. Nine Safety Countermeasures Road Safety Audits Rumble Strips and Rumble Stripes Median Barriers Safety Edge Roundabouts Left and Right Turn Lanes at Intersections Yellow Change Intervals Medians and Pedestrian Refuge Areas Walkways

  3. The Safety Edge: Minimizing The Effects of Shoulder Drop-off

  4. Topics • Problem of Drop-offs • Location of Drop-offs • Tire Scrubbing • One Solution • Construction Details • Benefits of a Safe Pavement Edge

  5. Vehicle Re-entry Are Drop-offs a Problem?

  6. Location of Drop-offs 1.Horizontal Curves 2.Near Mailboxes 3.Turnarounds 4.Shaded Areas 5.Eroded Areas (Drainage) 6. Asphalt Pavement Overlay

  7. Horizontal Curves

  8. Mail Boxes

  9. Shaded Areas Sunlight = Vegetation

  10. Asphalt Overlay 2” Asphalt Overlay + Existing 5” Drop-off = Extreme Unsafe Condition

  11. The Safety Edge:A Practical Solution

  12. Construction • Clip Shoulders • Construct Overlay • Pull Shoulders Flush • No Effect on Production • Minimal Monitoring

  13. The Hardware GDOT Version IV GDOT Version V

  14. End Gate Springs

  15. The Hardware $2,100 00 www.transtechsys.com Trans Tech Shoulder Wedge Maker TM

  16. Key Features Self Adjusting Spring ½” Radius Leading Edge 450 Compound Angle 300 Forming Edge

  17. Finished Surface

  18. Increased Edge Compaction ? Without Safety Edge With Safety Edge

  19. Safety Edge No Safety Edge Condition After One Year In-Service Edge Compaction

  20. Benefits of A Safe Edge • Increased Pavement Edge durability • Temporary Safety benefit during construction • Permanent Solution for future drop-off re-emergence • Reduce tort liability – Providing “Due Care” • Aid vehicle re-entry • Minimal hardware, labor, or material costs

  21. Other Solutions • Increase paved shoulder width • Maintain flush stabilized shoulders • Aggregate, RAP • Paved turnouts near mailboxes • Remove roadside hazards • In combination w/ rumble stripes • Place sod along pavement edge

  22. More Information • http://safety.fhwa.dot.gov/roadway_dept • www.pooledfund.org • TPF-5(097) Evaluation of the Safety Edge • Specifications and Drawings • Safety Impacts of Pavement Edge Drop-offs: www.aaafoundation.org, September 2006

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