LOW COST SAFETY IMPROVEMENTS
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6-1 LOW COST SAFETY IMPROVEMENTS Practitioner Workshop Exercise IX – Session #6
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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:. - PowerPoint PPT Presentation
Transcript of LOW COST SAFETY IMPROVEMENTS
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LOW COST SAFETY IMPROVEMENTS
Practitioner Workshop
Exercise IX
– Session #6
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Exercise
Learning Objectives:
Analyze traffic crash patterns and other engineering information
Select appropriate low cost safety and engineering countermeasures
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Exercise IX – Location A:
Run-off-the- Road Crashes on Curve
Speed limit is 35 mph4,500 ADTNo shoulderOne streetlightVertical drop to the I&M Canal is 9 feetNormal cross slope for outside lane
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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 daytime5 are at night2 involved vehicles in the canal
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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?
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Exercise IX – Location B:
Left Turn Crashes into Gas Station Driveway near major intersection
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Exercise IX – Location B:
Left Turn Crashes into Gas Station Driveway
View to the west of Diehl Road
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Exercise IX – Location B:
Left Turn Crashes into Gas Station Driveway
Mobil Gas Station
White Hen Convenience Store
Driveways
SW Quadrant
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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
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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
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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?
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Questions?
Exercise IX
