Identifying the change in travel speed and crash frequencies after reducing a speed limit in Naebu expressway, Seoul

Jungsoo Park, Do Gyeong Kim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The speed limit of Naebu Expressway (which is also called Inner City Expressway) was decreased from 80kph to 70kph to reduce the number of crashes on May 1, 2006 by the Seoul Metropolitan Police Agency (SMPA). The objective of this study is to examine the impact of reducing speed limit in Naebu Expressway on travel speed and crash frequencies using the before and after study with comparison group method. The results showed that average travel speeds are slightly decreased after reducing the speed limit. With regard to traffic accidents, however, the number of crashes was found to increase by 16% compared to the number of crashes occurred during the before period.

Original languageEnglish
Title of host publicationProceedings of the 13th International Conference of Hong Kong Society for Transportation Studies
Subtitle of host publicationTransportation and Management Science
Pages635-644
Number of pages10
StatePublished - 2008
Event13th International Conference of Hong Kong Society for Transportation Studies: Transportation and Management Science - Kowloon, Hong Kong
Duration: 13 Dec 200815 Dec 2008

Publication series

NameProceedings of the 13th International Conference of Hong Kong Society for Transportation Studies: Transportation and Management Science

Conference

Conference13th International Conference of Hong Kong Society for Transportation Studies: Transportation and Management Science
Country/TerritoryHong Kong
CityKowloon
Period13/12/0815/12/08

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