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Evaluation of Existing Roadside Safety Hardware Using Manual for Assessing Safety Hardware (MASH) Criteria (2010) / Chapter Skim
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Research Results Digest 349
Pages 1-12

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From page 1...
... PHASE I RESEARCH -- STATE-OFTHE-ART ASSESSMENT Since its publication in 1993, NCHRP Report 350: Recommended Procedures for the Safety Performance Evaluation of Highway Features established guidance EVALUATION OF EXISTING ROADSIDE SAFETY HARDWARE USING MANUAL FOR ASSESSING SAFETY HARDWARE (MASH) CRITERIA This digest presents the results of NCHRP Project 22-14(03)
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From page 2...
... It may be of interest to note that as the development of MASH progressed, it appeared that the new design test vehicle for structural adequacy tests would be a 5000-lb, 3⁄4-ton, standard cab pickup. The rationale was to keep the same body style pickup used under NCHRP Report 350 with a test inertia weight adjusted to reflect the upsizing trend indicated in sales of new passenger vehicles.
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From page 3...
... Test 3-11 Test Vehicle: 2007 Chevrolet Silverado 4-door pickup Test Inertia Weight: 5049 lb Gross Static Weight: 5049 lb Impact Speed: 62.6 mi/h Impact Angle: 25.2 degrees The New Jersey safety shape barrier contained and redirected the 2270P vehicle under TL-3 impact conditions. The vehicle did not penetrate, underride, or override the installation.
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From page 4...
... The New Jersey safety shape barrier performed acceptably when impacted by the 2270P vehicle (2007 Chevrolet Silverado pickup) and evaluated in accordance with the safety-performance evaluation criteria presented in MASH.
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From page 5...
... . Sign Supports Test Vehicle: 2003 Dodge Ram 1500 quad-cab pickup Test Inertia Weight: 4958 lb Gross Static Weight: 4958 lb Impact Speed: 63.3 mi/h Impact Angle: 0 degrees The U-channel and perforated square steel tube (PSST)
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From page 6...
... . G9 Thrie Beam Guardrail Test Vehicle: 2007 Chevrolet Silverado 4-door pickup Test Inertia Weight: 5019 lb Gross Static Weight: 5019 lb Impact Speed: 63.3 mi/h Impact Angle: 26.4 degrees The G9 thrie beam guardrail did not perform acceptably when impacted by the 2270P vehicle (2007 Chevrolet Silverado pickup)
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From page 7...
... , "Evaluation of Existing Roadside Safety Hardware Using Updated Criteria." It was guided by NCHRP Project Panel 22-14, chaired by Ronald J Seitz, with the following members: Richard B
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From page 8...
... Free-Standing Temporary F-Shape Barrier Free-Standing Temporary F-Shape Barrier 32-in. Permanent New Jersey Safety Shape Barrier 2002 GMC 2500 3⁄4-ton Pickup 2002 Dodge Ram 1500 Quad Cab Pickup 2002 GMC 2500 3⁄4-ton Pickup 2002 Dodge Ram 1500 Quad Cab Pickup 2002 Kia Rio 2002 GMC 2500 3⁄4-ton Pickup 2002 Dodge Ram 1500 Quad Cab Pickup 2002 Kia Rio 5000 5000 5000 5000 2588 5000 5000 2579 61.1 62.4 62.6 62.8 60.8 61.8 61.9 60.8 25.6 26.0 25.2 25.5 25.4 25.7 25.4 26.1 X = 17.3 Y = 16.2 X = 17.6 Y = 13.1 X = 17.1 Y = 14.8 X = 15.3 Y = 15.6 X = 14.8 Y = 17.1 X = 18.5 Y = 18.9 X = 17/0 Y = 17/3 X = 16.5 Y = 35.0 X = −19.7 Y = −8.5 X = 6.9 Y = −6.6 X = −8.8 Y = −5.3 X = −8.2 Y = −6.9 X = −16.1 Y = −8.4 X = −11.9 Y = −6.5 X = −7.2 Y = −11.4 X = −5.5 Y = −8.1
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From page 9...
... W-Beam Median Barrier 2002 Chevrolet C1500HD Crew Cab Pickup 2002 Kia Rio 2007 Chevrolet Silverado Pickup 2003 Dodge Ram 1500 Quad Cab Pickup 2007 Chevrolet Silverado Pickup 2007 Chevrolet Silverado Pickup 2007 Chevrolet Silverado Pickup 2002 Kia Rio 5083 2597 5049 4958 5029 5011 5004 2584 60.3 64.4 62.6 63.3 62.8 63.2 62.4 61.4 24.8 14.5 25.2 0 25.7 25.4 24.6 26.0 X = 24.4 Y = 25.0 X = 17.8 Y = 13.4 X = 14.1 Y = 30.2 No contact X = 16.4 Y = 28.5 X = 11.2 Y = 15.1 X = 9.5 Y = 10.5 X = 16.4 Y = 24.3 X = 12.7 Y = 8.7 X = −7.5 Y = −9.1 X = −5.6 Y = −9.6 N/A X = −8.1 Y = 16.4 X = −5.7 Y = 7.2 X = −3.4 Y = 4.5 X = −16.5 Y = 10.5
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From page 10...
... W-Beam Median Barrier 1989 Ford F-800 1999 Ford F-800 2003 Dodge Ram 1500 Quad Cab Pickup 2007 Chevrolet Silverado Pickup 2007 Chevrolet Silverado Pickup 2007 Chevrolet Silverado Pickup Truck rolled over rail Truck rolled over rail Excessive deformation Pickup penetrated and rolled Pickup rolled Penetrated rail element 22,045 22,090 4958 5009 5019 5029 56.5 57.4 61.7 64.4 63.3 64.0 16.2 14.4 0 26.1 26.4 25.1 X = 6.5 Y = 13.6 X = 8.2 Y = 13.8 X = 4.3 Y = 2.3 X = 21.6 Y = 14.1 X = 17.1 Y = 17.4 X = 17.2 Y = 17.1 X = −22.4 Y = −8.8 X = −4.3 Y = 7.7 X = −08 Y = −0.4 X = −10.2 Y = 9.6 X = −6.9 Y = 7.7 X = −5.2 Y = 5.3
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From page 12...
... . Persons wanting to pursue the project subject matter in greater depth should contact the CRP Staff, Transportation Research Board of the National Academies, 500 Fifth Street, NW, Washington, DC 20001.
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Key Terms

  • silverado pickup
  • chevrolet silverado
  • test inertia
  • safety hardware
  • nchrp project

  • occupant compartment
  • median barrier
  • jersey safety
  • safety shape
  • sign support

  • gross static
  • safety features
  • crash tests
  • evaluation criteria
  • occupant risk

  • pickup truck
  • compartment deformation
  • test vehicle
  • maximum occupant
  • impact speed

  • impact severity
  • impact conditions
  • vehicle remained
  • nchrp report
  • remained upright

  • exit box
  • risk factors
  • design test
  • existing roadside
  • shape barrier


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