Influence of Infrastructure Design on Distracted Driving (2022) / Chapter Skim
Currently Skimming:
Pages 59-69
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 59... ...
59 Chapter 6. Safety Framework for the Use of Crash Narratives to Assess the Impact of Infrastructure Design on Distraction 6.1 Introduction This Safety Framework assessed whether crash narratives can be utilized to identify IRDs.
|
From page 60... ...
60 To separate infrastructure from non-infrastructure external distractions, the facts and circumstances described in crash narratives can be reviewed manually. The reviewer can then assign the crash to one of several categories based on its primary cause.
|
From page 61... ...
61 6.2 Data Sets Utilized Many states provide public or reasonably straightforward access to crash data. However, due to the potential for exposing personal identifying information and the difficulty in coding narratives (especially if not entered electronically by attending officers)
|
From page 62... ...
62 for each of the three years were downloaded. As shown in Table 7, a total of 428 crash narratives were available.
|
From page 63... ...
63 • Sign. • Signal.
|
From page 64... ...
64 source of outside activity was a traffic situation that the driver should have been attending to and, as such, should not have been interpreted as a distraction. Examples include the following: • "Driver 1 of the semi-truck stated she saw that traffic was slowing down but was unable to stop; she stated she applied the emergency brake." o The officer likely interpreted traffic as the source of external distraction.
|
From page 65... ...
65 6.4.3 Crash Narratives Where OVD Was Present and Infrastructure Related Five narratives were noted as being infrastructure related based on the definition utilized for this research (see Section 1.4.1)
|
From page 66... ...
66 Figure 14. Summary of crash narrative coding results.
|
From page 67... ...
67 Figure 15. Word cloud created for crashes coded as involving an OVD but not IRD.
|
From page 68... ...
68 In demonstrating this framework, only a subset of crashes coded as involving an OVD were used for evaluation. The evaluation suggested that officers do not readily consider infrastructure items (beyond outdoor advertising)
|
From page 69... ...
69 6.5.3 Discussion The main objective of this analysis was to determine the feasibility of using crash narratives to evaluate the impact of IRDs on safety. The main advantage of using crash narratives is that crashes are a direct measure of safety, and an examination of crash narratives has the potential to pinpoint the actual cause of distraction.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.