Naturalistic Driving Study: Development of the Roadway Information Database (2014) / Chapter Skim
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Pages 93-100
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93 A p p e n d i x e The quality assurance process was a continuous task to ensure that quality data were collected by the mobile data vendor. Random sites, control sites, and a curve analysis were used to evaluate the accuracy of the data.
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94 A Figure E.1. S04B roadway features on a road segment.
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95 The intersection point from the mobile data had to be within 150 ft of the random/control site point. The final check was whether the number of approaches was correct, as well as the control type (Figure E.6)
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96 0 2 4 6 8 10 12 14 16 18 20 Pennsylvania 2013 Grade Comparison Ctre Fugro Figure E.4. Pennsylvania 2013 random site grade comparison.
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97 Figure E.8. Pennsylvania 2013 signs random and control site charts.
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98 Figure E.12. Pennsylvania 2013 guardrail random and control site charts.
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99 Figure E.17. Pennsylvania 2013 radius range of less than 1,500 ft.
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100 Figure E.19. Pennsylvania 2013 radius range of greater than 6,000 ft.
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