An understanding of the effects of road lighting on road safety at night is important for improving traffic safety management. Many researchers have explored various ways to discover the relationship between lighting and level of safety. However, most of the research approaches require long-term crash data, which is not available in many cases. In addition, most of the previous studies focused on the influence of entire road segments. The influence of road lighting on critical sites, such as crossings, has rarely been investigated. In light of this, a difference-in-difference model was applied in this study to evaluate the impacts of road lighting at crossings at night. A dummy variable was defined to represent the rate of speed variation. The difference of can represent the impact of road lighting on safety. The model was applied using field data collected from four road segments in Nanjing, Jiangsu Province, China. The results show that the impact of road lighting on road safety at critical sites is significant. The lack of road lighting may increase the driving speed variation rate, which in turn can increase the risk of road crashes.
The Influence of Road Lighting on Safety at Crossings
17th COTA International Conference of Transportation Professionals ; 2017 ; Shanghai, China
CICTP 2017 ; 5056-5066
2018-01-18
Conference paper
Electronic Resource
English
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