Rural two-lane roads generally lack physical measures such as wide medians or barriers to separate opposing traffic flows. As a result, a major crash problem on these roads involves vehicles crossing the centerline and either sideswiping or striking the front ends of opposing vehicles. These types of opposing-direction crashes account for about 20% all fatal crashes on rural two-lane roads and ...

In the United States, hundreds of people lose their lives each year and many more are injured due to vehicle crashes in the work zones. Over the years, temporary traffic control (TCC) measures have been developed and deployed in work zones. To continuously improve the safety, there is a need to identify the traffic control deficiencies in work zones by evaluating the effectiveness of existing T...

Modern vehicle designs tested as part of US consumer information programs achieve high ratings for frontal crash protection. Research is needed to determine how these tests can be upgraded to further improve occupant protection in real-world frontal crashes. The present study is a detailed analysis of real-world cases with serious injuries resulting from frontal crashes of vehicles rated good f...

Negative binomial regression models were used to assess the effect of street and street network characteristics on total crashes, severe injury crashes, and fatal crashes. Data from over 230,000 crashes taking place over 11 years in 24 California cities was analyzed at the U.S. Census Block Group level of geography. In our analysis we controlled for variables such as vehicle volumes, income lev...

The population of occupants in far-side crashes that are documented in the US National database (NASS/CDS) was studied. The annual number of front seat occupants with serious or fatal injuries in far-side planar and rollover crashes was 17,194. The crash environment that produces serious and fatal injuries to belted front seat occupants in planar far-side crashes was investigated in detail. It ...

The majority of research on bicyclist injury severity relates to bicycle-motor vehicle crashes, even though single-bicycle crashes make up more than half bicycle crashes. This study explores the factors related outcome We use crash data obtained from medical records collected in period 2010-2015 combined with road maintenance data. includes three categories: 'severe injury', 'slight 'no injury'...

A study of fatal traffic crashes in Florida examined contributing factors among crashes in which younger (under age 25) drivers were found to be at fault. A case-based analysis was used to improve the accuracy and completeness of the data from the original crash reports. Results were presented using over-representation factors (ORB), a simplified but statistically significant approach to freque...

BACKGROUND Traffic offences have been considered an important predictor of crash involvement, and have often been used as a proxy safety variable for crashes. However the association between crashes and offences has never been meta-analysed and the population effect size never established. Research is yet to determine the extent to which this relationship may be spuriously inflated through syst...

This research measured the effects of Michigan’s compulsory safety belt use law on traffic crashes and injuries of various severities. Using time-series methods, the authors analyzed monthly frequencies of crash-induced injuries and fatalities from January 1978 through December 1987. Exposure to risk of occupant injury was controlled statistically by including aggregate frequency of crashes as ...