Please use this identifier to cite or link to this item:
Title: Vehicle headway distribution in work zones
Authors: Weng, J.
Meng, Q.
Fwa, T.F. 
Keywords: lane position
traffic flow
vehicle headway
work intensity
work zone
Issue Date: 2014
Citation: Weng, J., Meng, Q., Fwa, T.F. (2014). Vehicle headway distribution in work zones. Transportmetrica A: Transport Science 10 (4) : 285-303. ScholarBank@NUS Repository.
Abstract: This study investigates work zone vehicle headway distribution by disaggregating the vehicle headways into four types: car-car, car-truck, truck-car and truck-truck. It first confirms that the four types of vehicle headways are significantly different by performing the Kruskal-Wallis and Mann-Whitney tests using work zone headway data from Singapore. The statistical test results further show that four factors - traffic flow rate, percentage of trucks, work intensity and lane position - have a significant impact on each type of vehicle headway in work zones. A useful methodology is thus proposed to determine the best-fitted headway distribution model for each type, which includes two procedures: determining the best distribution pattern for each type using the maximum-likelihood estimation and Kolmogorov-Smirnov test techniques and formulating the distribution model parameters as a function of the aforementioned four factors. © 2013 © 2013 Hong Kong Society for Transportation Studies Limited.
Source Title: Transportmetrica A: Transport Science
ISSN: 23249943
DOI: 10.1080/23249935.2012.762564
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Sep 19, 2018


checked on Sep 19, 2018

Page view(s)

checked on Jul 6, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.