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Precision Estimates of AASHTO T 242 (2009)

Chapter: APPENDIX E- TRC DEPARTURE STATE SYSTEM FRICTION MEASUREMENTS USING 524 TIRE AND THE CORRESPONDING STATISTICS

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Suggested Citation:"APPENDIX E- TRC DEPARTURE STATE SYSTEM FRICTION MEASUREMENTS USING 524 TIRE AND THE CORRESPONDING STATISTICS." National Academies of Sciences, Engineering, and Medicine. 2009. Precision Estimates of AASHTO T 242. Washington, DC: The National Academies Press. doi: 10.17226/23017.
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Page 73
Page 74
Suggested Citation:"APPENDIX E- TRC DEPARTURE STATE SYSTEM FRICTION MEASUREMENTS USING 524 TIRE AND THE CORRESPONDING STATISTICS." National Academies of Sciences, Engineering, and Medicine. 2009. Precision Estimates of AASHTO T 242. Washington, DC: The National Academies Press. doi: 10.17226/23017.
×
Page 74
Page 75
Suggested Citation:"APPENDIX E- TRC DEPARTURE STATE SYSTEM FRICTION MEASUREMENTS USING 524 TIRE AND THE CORRESPONDING STATISTICS." National Academies of Sciences, Engineering, and Medicine. 2009. Precision Estimates of AASHTO T 242. Washington, DC: The National Academies Press. doi: 10.17226/23017.
×
Page 75
Page 76
Suggested Citation:"APPENDIX E- TRC DEPARTURE STATE SYSTEM FRICTION MEASUREMENTS USING 524 TIRE AND THE CORRESPONDING STATISTICS." National Academies of Sciences, Engineering, and Medicine. 2009. Precision Estimates of AASHTO T 242. Washington, DC: The National Academies Press. doi: 10.17226/23017.
×
Page 76
Page 77
Suggested Citation:"APPENDIX E- TRC DEPARTURE STATE SYSTEM FRICTION MEASUREMENTS USING 524 TIRE AND THE CORRESPONDING STATISTICS." National Academies of Sciences, Engineering, and Medicine. 2009. Precision Estimates of AASHTO T 242. Washington, DC: The National Academies Press. doi: 10.17226/23017.
×
Page 77
Page 78
Suggested Citation:"APPENDIX E- TRC DEPARTURE STATE SYSTEM FRICTION MEASUREMENTS USING 524 TIRE AND THE CORRESPONDING STATISTICS." National Academies of Sciences, Engineering, and Medicine. 2009. Precision Estimates of AASHTO T 242. Washington, DC: The National Academies Press. doi: 10.17226/23017.
×
Page 78
Page 79
Suggested Citation:"APPENDIX E- TRC DEPARTURE STATE SYSTEM FRICTION MEASUREMENTS USING 524 TIRE AND THE CORRESPONDING STATISTICS." National Academies of Sciences, Engineering, and Medicine. 2009. Precision Estimates of AASHTO T 242. Washington, DC: The National Academies Press. doi: 10.17226/23017.
×
Page 79
Page 80
Suggested Citation:"APPENDIX E- TRC DEPARTURE STATE SYSTEM FRICTION MEASUREMENTS USING 524 TIRE AND THE CORRESPONDING STATISTICS." National Academies of Sciences, Engineering, and Medicine. 2009. Precision Estimates of AASHTO T 242. Washington, DC: The National Academies Press. doi: 10.17226/23017.
×
Page 80
Page 81
Suggested Citation:"APPENDIX E- TRC DEPARTURE STATE SYSTEM FRICTION MEASUREMENTS USING 524 TIRE AND THE CORRESPONDING STATISTICS." National Academies of Sciences, Engineering, and Medicine. 2009. Precision Estimates of AASHTO T 242. Washington, DC: The National Academies Press. doi: 10.17226/23017.
×
Page 81
Page 82
Suggested Citation:"APPENDIX E- TRC DEPARTURE STATE SYSTEM FRICTION MEASUREMENTS USING 524 TIRE AND THE CORRESPONDING STATISTICS." National Academies of Sciences, Engineering, and Medicine. 2009. Precision Estimates of AASHTO T 242. Washington, DC: The National Academies Press. doi: 10.17226/23017.
×
Page 82

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73 APPENDIX E- TRC DEPARTURE STATE SYSTEM FRICTION MEASUREMENTS USING 524 TIRE AND THE CORRESPONDING STATISTICS

74 Table E-1- TRC Departure State System measurements at 20 mph on three surfaces (Pads) using 524 tire and the corresponding statistics based on ASTM E 691, the data in shaded cells were considered outliers and were eliminated from the analysis

75 Table E-1- (Cont.)- TRC Departure State System measurements at 20 mph on three surfaces (Pads) using 524 tire and the corresponding statistics based on ASTM E 691, the data in shaded cells were considered outliers and were eliminated from the analysis

76 Table E-1- (Cont.)- TRC Departure State System measurements at 20 mph on three surfaces (Pads) using 524 tire and the corresponding statistics based on ASTM E 691, the data in shaded cells were considered outliers and were eliminated from the analysis

77 Table E-2- TRC Departure State System measurements at 40 mph on three surfaces (Pads) using 524 tire and the corresponding statistics based on ASTM E 691, the data in shaded cells were considered outliers and were eliminated from the analysis

78 Table E-2- (Cont.)- TRC Departure State System measurements at 40 mph on three surfaces (Pads) using 524 tire and the corresponding statistics based on ASTM E 691, the data in shaded cells were considered outliers and were eliminated from the analysis

79 Table E-2- (Cont.)- TRC Departure State System measurements at 40 mph on three surfaces (Pads) using 524 tire and the corresponding statistics based on ASTM E 691, the data in shaded cells were considered outliers and were eliminated from the analysis

80 Table E-3- TRC Departure State System measurements at 60 mph on three surfaces (Pads) using 524 tire and the corresponding statistics based on ASTM E 691, the data in shaded cells were considered outliers and were eliminated from the analysis

81 Table E-3- (Cont.)- TRC Departure State System measurements at 60 mph on three surfaces (Pads) using 524 tire and the corresponding statistics based on ASTM E 691, the data in shaded cells were considered outliers and were eliminated from the analysis

82 Table E-3- (Cont.)- TRC Departure State System measurements at 60 mph on three surfaces (Pads) using 524 tire and the corresponding statistics based on ASTM E 691, the data in shaded cells were considered outliers and were eliminated from the analysis

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TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 142: Precision Estimates of AASHTO T 242 examines precision estimates for AASHTO (American Association of State Highway and Transportation Officials) T 242, “Frictional Properties of Paved Surfaces Using a Full-Scale Tire.”

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