A Multivariate Analysis of Crash and Naturalistic Driving Data in Relation to Highway Factors (2013) / Chapter Skim
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Pages 54-58
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54 A p p e n d i x A The ability to predict the occurrence of crashes on roadways has been a challenge to the transportation profession since the early days of motorized transportation, and a large number of studied have been conducted to relate highway safety to highway design, environmental and driver characteristics. The literature on these studies is extensive.
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55 Horizontal and Vertical Alignment Elements of horizontal alignment include degree and length of horizontal curve, presence of spiral or other transition curve, and the superelevation. Elements of vertical alignment include vertical lines or grades and vertical curves (sags and crests)
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56 mile increased with higher AADT, higher number of lanes, greater access density, higher proportion of time the road surface is wet, and higher traffic speed variation but lower speed and lower skid number (a measure of the surface friction)
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57 and Moskowitz 2001; Charlton et al. 2004; Walsh et al.
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From page 58... ...
58 and sustained attention (Comalli, Wapner, and Werner 1962; Parasuraman and Greenwood 1998; Sexton and Geffen 1979)
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