Modified HFST Peterson ATSSA 2013 Ken Kochevar
California’s Pioneering Experience with HFST
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Process in California • How and When we Started • Issues and Approach we Took • Where are we Going
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Test Location Received approval by one of the Technical Committees as a new product State Route 20 near Nevada City – location is on a two lane winding mountain highway at approximately 4000 feet elevation. ADT – 4,000 Collision history indicated a pattern of drivers losing control in EB direction. Frequent high collision concentration location Area receives frequent snow fall and rain during winter months.
Installed product - September 2008 – Ennis Paint Corp provided product and manpower, Caltrans provided traffic control 3
Test Location Aerial view showing curve warning signs for EB direction
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Test Location Skid test numbers before installation in the 45-48 range. (Avg. 48) Skid test numbers after installation in the 75-80 range. (Avg. 78) This route used for approximately 6-7 months as truck detour in 2009 with 1500 truck per night using the detour.
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Getting HFST Mainstreamed • Presentation at our Traffic Safety Steering Committee – 12 districts • Attended Roadway Departure Webinars that showed early successful HFST installations. • Closely worked with Office of Pavement to discuss HFST as a safety countermeasure and to develop Non Standard Special Provision (NSSP) for the product. 6
Planned Projects • 13 locations completed • 37 locations are in the planning/design stage • Roadway Departure Safety Implementation Plan – 179 locations
• Total - 229 locations 7
Planned Projects • Typical locations: – Curves on rural highways and freeway connectors – End of loop on ramps – Intersections
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Planned Projects Del Norte - SR199
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Planned Projects DN-199 • All 28 collisions in 3 years occurred under wet pavement conditions • District had used many low cost countermeasures with little change in collision pattern.
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Planned Projects DN-199 • Initial proposed project was to realign curve. – $14 million project – Project would take 5-6 years to get environmental approval and construct. – How many additional crashes?
• Realignment project has been put on hold to install HFST (~$250K) 11
California HFST Contacts • Robert Peterson – Caltrans, Branch Chief, Highway Safety Improvement Program Office of Traffic Safety Program 916-654-3748 / [email protected] • Ken Kochevar- FHWA, Safety Team Leader 916-498-5853 / [email protected] 12
1
Process in California • How and When we Started • Issues and Approach we Took • Where are we Going
2
Test Location Received approval by one of the Technical Committees as a new product State Route 20 near Nevada City – location is on a two lane winding mountain highway at approximately 4000 feet elevation. ADT – 4,000 Collision history indicated a pattern of drivers losing control in EB direction. Frequent high collision concentration location Area receives frequent snow fall and rain during winter months.
Installed product - September 2008 – Ennis Paint Corp provided product and manpower, Caltrans provided traffic control 3
Test Location Aerial view showing curve warning signs for EB direction
4
Test Location Skid test numbers before installation in the 45-48 range. (Avg. 48) Skid test numbers after installation in the 75-80 range. (Avg. 78) This route used for approximately 6-7 months as truck detour in 2009 with 1500 truck per night using the detour.
5
Getting HFST Mainstreamed • Presentation at our Traffic Safety Steering Committee – 12 districts • Attended Roadway Departure Webinars that showed early successful HFST installations. • Closely worked with Office of Pavement to discuss HFST as a safety countermeasure and to develop Non Standard Special Provision (NSSP) for the product. 6
Planned Projects • 13 locations completed • 37 locations are in the planning/design stage • Roadway Departure Safety Implementation Plan – 179 locations
• Total - 229 locations 7
Planned Projects • Typical locations: – Curves on rural highways and freeway connectors – End of loop on ramps – Intersections
8
Planned Projects Del Norte - SR199
9
Planned Projects DN-199 • All 28 collisions in 3 years occurred under wet pavement conditions • District had used many low cost countermeasures with little change in collision pattern.
10
Planned Projects DN-199 • Initial proposed project was to realign curve. – $14 million project – Project would take 5-6 years to get environmental approval and construct. – How many additional crashes?
• Realignment project has been put on hold to install HFST (~$250K) 11
California HFST Contacts • Robert Peterson – Caltrans, Branch Chief, Highway Safety Improvement Program Office of Traffic Safety Program 916-654-3748 / [email protected] • Ken Kochevar- FHWA, Safety Team Leader 916-498-5853 / [email protected] 12
