Analysis of Naturalistic Driving Study Data: Safer Glances, Driver Inattention, and Crash Risk (2014) / Chapter Skim
Currently Skimming:
Pages 30-40
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 30... ...
30 C h a p t e r 3 This analysis primarily focuses on providing the context for which subsequent analyses can be interpreted. It provides an orientation regarding the context, conditions, and driver demographics from which the data were collected.
|
From page 31... ...
31 10. Traffic density should be within one category -- met.
|
From page 32... ...
32 The Lead-Vehicle-Decelerating Scenario [Wald X2 (1)
|
From page 33... ...
33 Visual Obstructions Visual obstructions were originally categorized into a variety of elements as shown in Figure 3.6. However, since there were few observations in each unique category, we recategorized the data into "Obstruction Present" and "No Obstruction." Based on this simple categorization, crashes were significantly more likely to include an obstruction compared with near crashes [Wald X2 (1)
|
From page 34... ...
34 event. If the event occurs at an intersection, the traffic flow conditions just before the intersection should be recorded." Crashes and near crashes were not different from their matched baseline cases or from each other on traffic flow.
|
From page 35... ...
35 Figure 3.5. Percentage of driver reactions for near-crash and crash events.
|
From page 36... ...
36 Table 3.1. Comparison of Speed Similarity Between Matched Baselines and Crashes/Near Crashes Event Type Mean Speed (km/h)
|
From page 37... ...
37 Figure 3.8. Percentage of types of traffic flow by event type.
|
From page 38... ...
38 Figure 3.10. Percentage of locality type by event type.
|
From page 39... ...
39 Figure 3.12. Percentage of weather type by event type.
|
From page 40... ...
40 Surface Condition Surface condition is defined as "the type of roadway surface condition that would affect the vehicle's coefficient of friction at the start of the precipitating event." Surface condition did not differ among any of the event types, including comparisons between crashes, near crashes, and their respective matched baselines. Lighting Lighting is defined as "the lighting condition at the time of the start of the precipitating event." Lighting did not vary between near crashes and crashes, or between each of these and their matched baselines.
|
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.