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http://dx.doi.org/10.5351/KJAS.2017.30.5.719

Effects of maximum speed limit on Gyeongbu Expressway  

Song, Yinhua (Department of Applied Statistics, Chung-Ang University)
Seong, Byeongchan (Department of Applied Statistics, Chung-Ang University)
Publication Information
The Korean Journal of Applied Statistics / v.30, no.5, 2017 , pp. 719-731 More about this Journal
Abstract
In September 2010, the Korea government increased the speed limit on the Gyeongbu Expressway (Cheonan IC.-Yangjae IC) from 100 to 110 km per hour. This paper considers ARIMA-Intervention model to analyze the effects of the speed limit change on the incidences of traffic accidents and injuries. In addition, in order to investigate the effects more clearly, we also analyze the difference between the two lines of Cheonan IC-Yangjae IC and Busan IC-Cheonan IC. As a result, we observe that the numbers of accidents and injuries have increased after the speed limit change. The increases are strikingly distinctive in comparison to other lines (Busan IC-Cheonan IC) where there have been no changes in the maximum speed limit.
Keywords
intervention analysis; ARIMA model; traffic accidents; traffic injuries;
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Times Cited By KSCI : 1  (Citation Analysis)
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