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LOW COST SAFETY IMPROVEMENTS

LOW COST SAFETY IMPROVEMENTS. Practitioner Workshop Exercise IX – Session #6. Exercise. Learning Objectives: Analyze traffic crash patterns and other engineering information Select appropriate low cost safety and engineering countermeasures. Exercise IX – Location A:.

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LOW COST SAFETY IMPROVEMENTS

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  1. LOW COST SAFETY IMPROVEMENTS Practitioner Workshop Exercise IX – Session #6

  2. Exercise Learning Objectives: • Analyze traffic crash patterns and other engineering information • Select appropriate low cost safety and engineering countermeasures

  3. Exercise IX – Location A: Run-off-the- Road Crashes on Curve • Speed limit is 35 mph • 4,500 ADT • No shoulder • One streetlight • Vertical drop to the I&M Canal is 9 feet • Normal cross slope for outside lane

  4. Exercise IX – Location A: Run-off-the- Road Crashes on Curve Substantive Safety Performance: 6 Run-Off-The-Road Crashes in 3 years – 1 is daytime 5 are at night 2 involved vehicles in the canal

  5. Exercise IX – Location A: • What Low Cost Safety Countermeasures (that you have learned about today) would you consider? • What is the safety effect of each?

  6. Exercise IX – Location B: Left Turn Crashes into Gas Station Driveway near major intersection

  7. Exercise IX – Location B: Left Turn Crashes into Gas Station Driveway View to the west of Diehl Road

  8. Exercise IX – Location B: Left Turn Crashes into Gas Station Driveway Mobil Gas Station SW Quadrant White Hen Convenience Store Driveways

  9. Exercise IX – Location B: Left Turn Crashes into Gas Station Driveway • Mobil Gas Station on southwest quadrant of major intersection of state marked route and major arterial street • State route is 4-lane (12’ lanes curb and gutter) with 12’ left turn lanes at 48,000 ADT at 40 mph and raised concrete median fronting gas station • Major arterial street is 5-lane (12’ lanes) with no median at 26,000 ADT at 40 mph • White Hen convenience store to south of gas station has cross access with gas station

  10. Exercise IX – Location B: Left Turn Crashes into Gas Station Driveway – Substantive Safety Performance • 19 crashes of westbound left turning vehicles with eastbound through vehicles in last 12 months at Mobil driveway 60 feet west of west curb line of state marked route • Additional info: Manager of White Hen is a friend of the Mayor; Councilman is a senior Officer for an Oil Company

  11. Exercise IX – Location B: Left Turn Crashes into Gas Station Driveway • Left turns from westbound Diehl Road into Gas Station Driveway were Prohibited • Sign was posted (near right and far right position) as well as Do NOT ENTER • Results were 6 left turn crashes in 3 months. What low cost safety countermeasures would you consider? What is the safety effect of each?

  12. Exercise IX Questions?

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