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Safety Recommendation Details

Safety Recommendation H-11-031
Synopsis: On Friday, March 26, 2010, about 5:14 a.m. central daylight time, near Munfordville, Kentucky, a 1999 Freightliner truck-tractor in combination with a 1998 Strick Corporation 53-foot-long van semitrailer, owned by the motor carrier Hester, Inc., and being driven by a 45-year-old male, was traveling south on Interstate 65 (I-65) near milepost 61.5. The truck departed the left lane of southbound I-65 at a shallow angle and entered the 60-foot-wide depressed earthen median between the southbound and northbound roadways. The truck traveled across the median and struck and overrode the high-tension, four-cable, alternating-post median barrier adjacent to the left shoulder of northbound I-65. It then crossed the left shoulder and entered the travel lanes of northbound I-65. At that time, a 2000 Dodge 15-passenger van, driven by a 41-year-old male and occupied by 11 passengers, was traveling northbound in the left lane. As the truck crossed in front of the van, its tractor was struck by the van. The van rotated clockwise and became engaged with the truck’s trailer; the two vehicles continued across both travel lanes and the right shoulder of northbound I-65. As the truck and van traveled across the right shoulder, the van separated from the truck, struck the cut rock wall beyond the shoulder, and rebounded back into the travel lanes, coming to rest in the left lane of northbound I-65, facing south. The truck’s tractor struck the cut rock wall, and the vehicle rolled onto its right side. As the truck came to rest across both northbound lanes, a fire ensued that destroyed the tractor and the sides and roof of the semitrailer. As a result of the accident and subsequent truck fire, the truck driver, the van driver, and nine van passengers died. Two child passengers in the van, who were using child restraints, sustained minor injuries. The National Transportation Safety Board (NTSB) determined that the probable cause of this accident was the truck driver’s failure to maintain control of the truck-tractor combination vehicle because he was distracted by use of his cellular telephone. Contributing to the severity of the accident were a median barrier that was not designed to safely contain or redirect the heavy vehicle and the lack of adequate guidance to the states in the form of high-performance median barrier warrants. One issue that the NTSB identified during its investigation was the need to provide objective warrants, rather than general guidelines, for the application of median barriers. This issue area has elements that concern the Federal Highway Administration (FHWA).
Recommendation: TO THE AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS: Work with the Federal Highway Administration to establish warrants and implementation criteria for the selection and installation of Test Level Four and Test Level Five median barriers on the National Highway System, and publish those warrants and criteria in the Roadside Design Guide. [This recommendation supersedes Safety Recommendation H-98-24.]
Original recommendation transmittal letter: PDF
Overall Status: Open - Acceptable Response
Mode: Highway
Location: Munfordville, KY, United States
Is Reiterated: No
Is Hazmat: No
Accident #: HWY10MH011
Accident Reports: Truck-Tractor Semitrailer Median Crossover Collision With 15-Passenger Van
Report #: HAR-11-02
Accident Date: 3/26/2010
Issue Date: 10/4/2011
Date Closed:
Addressee(s) and Addressee Status: American Association of State Highway and Transportation Officials (Open - Acceptable Response)

Safety Recommendation History
From: NTSB
To: American Association of State Highway and Transportation Officials
Date: 5/23/2014
Response: This letter concerns 16 open safety recommendations that the National Transportation Safety Board (NTSB) issued to the American Association of State Highway and Transportation Officials between 2002 and 2012. I understand that we received requests from your staff to speak at two of your July committee meetings regarding several of these open recommendations. I am pleased to inform you that NTSB staff members are available to attend both meetings. For the July 16, 2014, meeting in Portland, Maine, of the Technical Committee for Roadside Safety, Mr. Dan Walsh, General Engineer, Office of Highway Safety, and Ms. Julie Perrot, Highway Safety Recommendation Specialist, Office of the Managing Director, will make a presentation and be available to discuss the following 12 roadside barrier recommendations.

From: NTSB
To: American Association of State Highway and Transportation Officials
Date: 1/10/2013
Response: We note that AASHTO currently has several National Cooperative Highway Research Program projects underway that aim to improve current median design guidelines, to explore the development of guardrail test level warrants for medians, and to determine reasonable considerations for median barrier selection. Upon completion of these projects, AASHTO plans to work with the FHWA to examine the findings and develop guidance that will be incorporated into the AASHTO Roadside Design Guide. Pending publication of the revised guide, Safety Recommendations H-11-31 through -33 are classified OPEN—ACCEPTABLE RESPONSE.

From: American Association of State Highway and Transportation Officials
Date: 3/30/2012
Response: -From John Horsley, Executive Director: Currently, AASHTO has research projects, NCHRP 22 21A, A Median Cross-Section Design/or Rural Divided Highways, and NCHRP 22-22, Placement o/Traffic Barriers on Roadside and Median Slopes, under way developing improved guidelines for designing median typical crosssections on new and existing rural divided highways for inclusion in the Roadside Design Guide. The result of a research project, NCHRP 22-25, Development o/Guidance/or the Selection, Use and Maintenance of Cable Barrier Systems, will be available soon addressing more than a dozen areas for which guidance is needed, such as the range of cross sections, 3- and 4-cable considerations, the lateral placement, construction and maintenance tolerance, types of wire rope, and maintenance factors. The other related research project is NCHRP 22-12(03), Recommended Guidelines for the Selection of Test Levels 2 Through 5 Bridge Rails, which has the objective to develop recommended guidelines considering in-service performance. Although the bridge railing report will be specific to bridges, the results would be useful to find any reasonable expectation of developing guardrail Test Level warrants for medians. This research project is to be completed in July 2012. Upon projects completion, the findings will be examined in the AASHTO's Subcommittee on Design and the Technical Committee for Roadside Safety with assistance from FHWA.