Influence of Infrastructure Design on Distracted Driving (2022) / Chapter Skim
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Pages 125-133
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125 Chapter 11. Conclusions and Recommendations 11.1 Summary With the exception of billboards and general urban clutter, very few IRDs have been researched.
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126 11.2 Key Findings and Recommendations A summary of the key findings for each of the Safety Frameworks developed is provided in this section. 11.2.1 Safety Framework for the Use of Crash Narratives This Safety Framework assessed whether crash narratives can be utilized to identify IRDs.
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127 element on distraction and then test the efficacy of the approach. This Safety Framework used data from a wind turbine data set and Iowa crash and roadway data sets.
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128 • As noted previously, except for unique infrastructure elements, crashes coded as involving an OVD do not appear to be a good indicator of IRD, making it difficult to determine whether a crash in the vicinity of a particular roadway element is related to that element. Without indication of an OVD, a crash can only be inferred to be related to the element.
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129 [on/off]
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130 infrastructure features. Eye tracking and driving performance data from a sample of 72 drivers were analyzed to determine whether evidence exists linking five external roadway features to visual attention and driving performance.
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131 equipment, the amount of time drivers spent glancing at the crossing features could be determined. 11.2.5 Distraction Surrogates The topic of distracted driving within the human factors community has coalesced on visual distraction, which is an activity that requires a driver to divert his or her gaze from the road to acquire information from the distracting source (Campbell et al.
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132 o Horizontal gaze dispersion: Horizontal dispersion of gaze (in degrees)
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133 • Conduct further analyses to select the most relevant measures of distraction for IRD: As noted throughout this report, classical measures of distraction, such as glances of 2 or more seconds, are not entirely applicable to the evaluation of distraction related to infrastructure elements. As a result, additional evaluation to identify the measures that yield the best results could be undertaken.
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