Add to ORKGFederal Highway Administration, Washington, D.C.Pennsylvania Department of Transportation, HarrisburgMode of access: Internet.Author corporate affiliation: Pennsylvania Transportation Institute, University ParkReport covers the period Jan - Dec 1985Subject code: CCCCCSubject code: CDFSubject code: NLSJSubject code: NOB*CDFSubject code: NPSubject code: YE
Federal Highway Administration, Office of Research, Washington, D.C.Mode of access: Internet.Author ...
Federal Highway Administration, Office of Research and Development, Washington, D.C.Mode of access: ...
Texas Department of Transportation, AustinFederal Highway Administration, Washington, D.C.Mode of ac...
Texas Department of Transportation, AustinMode of access: Internet.Author corporate affiliation: Tex...
Federal Highway Administration, Washington, D.C.Mode of access: Internet.Author corporate affiliatio...
Texas Department of Transportation, AustinFederal Highway Administration, Washington, D.C.Mode of ac...
Federal Highway Administration, Washington, D.C.Mode of access: Internet.Author corporate affiliatio...
Texas Department of Transportation, AustinFederal Highway Administration, Washington, D.C.Mode of ac...
Federal Highway Administration, Washington, D.C.Mode of access: Internet.Author corporate affiliatio...
Federal Highway Administration, Office of Research, Washington, D.C.Mode of access: Internet.Author ...
Mode of access: Internet.Author corporate affiliation: Federal Highway Administration, Washington, D...
Federal Highway Administration, Washington, D.C.Mode of access: Internet.Author corporate affiliatio...
Mode of access: Internet.Author corporate affiliation: Federal Highway Administration, McLean, Va.Su...
Federal Highway Administration, Washington, D.C.Mode of access: Internet.Author corporate affiliatio...
Federal Highway Administration, Washington, D.C.Mode of access: Internet.Author corporate affiliatio...
Federal Highway Administration, Office of Research, Washington, D.C.Mode of access: Internet.Author ...
Federal Highway Administration, Office of Research and Development, Washington, D.C.Mode of access: ...
Texas Department of Transportation, AustinFederal Highway Administration, Washington, D.C.Mode of ac...
Texas Department of Transportation, AustinMode of access: Internet.Author corporate affiliation: Tex...
Federal Highway Administration, Washington, D.C.Mode of access: Internet.Author corporate affiliatio...
Texas Department of Transportation, AustinFederal Highway Administration, Washington, D.C.Mode of ac...
Federal Highway Administration, Washington, D.C.Mode of access: Internet.Author corporate affiliatio...
Texas Department of Transportation, AustinFederal Highway Administration, Washington, D.C.Mode of ac...
Federal Highway Administration, Washington, D.C.Mode of access: Internet.Author corporate affiliatio...
Federal Highway Administration, Office of Research, Washington, D.C.Mode of access: Internet.Author ...
Mode of access: Internet.Author corporate affiliation: Federal Highway Administration, Washington, D...
Federal Highway Administration, Washington, D.C.Mode of access: Internet.Author corporate affiliatio...
Mode of access: Internet.Author corporate affiliation: Federal Highway Administration, McLean, Va.Su...
Federal Highway Administration, Washington, D.C.Mode of access: Internet.Author corporate affiliatio...
Federal Highway Administration, Washington, D.C.Mode of access: Internet.Author corporate affiliatio...
Federal Highway Administration, Office of Research, Washington, D.C.Mode of access: Internet.Author ...
Federal Highway Administration, Office of Research and Development, Washington, D.C.Mode of access: ...
Texas Department of Transportation, AustinFederal Highway Administration, Washington, D.C.Mode of ac...