TY  - JOUR
PY  - 2013//
TI  - Analysis of the frequency and severity of rear-end crashes in work zones
JO  - Traffic injury prevention
A1  - Qi, Yi
A1  - Srinivasan, Raghavan
A1  - Teng, Hualiang
A1  - Baker, Robert
SP  - 61
EP  - 72
VL  - 14
IS  - 1
N2  - Objective: The objective of this study was to identify the factors that influence the frequency and severity of rear-end crashes in work zones because rear-end crashes represent a significant proportion of crashes that occur in work zones. Methods: Truncated count data models were developed to identify influencing factors on the frequency of read-end crashes in work zones and ordered probit models were developed to evaluate influencing factors on the severity of rear-end crashes in work zones. Results: Most of the variables identified in this study for these 2 models were significant at the 95 percent level. The statistics for models indicate that the 2 developed models are appropriate compared to alternative models. Conclusions: Major findings related to the frequency of rear-end crashes include the following: (1) work zones for capacity and pavement improvements have the highest frequency compared to other types of work zones; (2) work zones controlled by flaggers are associated with more rear-end crashes compared to those controlled by arrow boards; and (3) work zones with alternating one-way traffic tended to have more rear-end crashes compared to those with lane shifts. Major findings related to the severity of the rear-end crashes include the following: (1) rear-end crashes associated with alcohol, night, pedestrians, and roadway defects are more severe, and those associated with careless backing, stalled vehicles, slippery roadways, and misunderstanding flagging signals are less severe; (2) truck involvement and a large number of vehicles in a crash are both associated with increased severity, and (3) rear-end crashes that happened in work zones for bridge, capacity, and pavement are likely to be more severe than others.<p />  <p>Language: en</p>
LA  - en
SN  - 1538-9588
UR  - http://dx.doi.org/10.1080/15389588.2012.675109
ID  - ref1
ER  -