Contracting in highway maintenance and rehabilitation: Are spatial effects important?

Anastasopoulos, PCh; Florax, RJGM; Labi, S; Karlaftis, MG

dc.contributor.author	Anastasopoulos, PCh	en
dc.contributor.author	Florax, RJGM	en
dc.contributor.author	Labi, S	en
dc.contributor.author	Karlaftis, MG	en
dc.date.accessioned	2014-03-01T01:33:03Z
dc.date.available	2014-03-01T01:33:03Z
dc.date.issued	2010	en
dc.identifier.issn	0965-8564	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20296
dc.subject	Contract management	en
dc.subject	Cost savings	en
dc.subject	Infrastructure maintenance	en
dc.subject	Innovative outsourcing	en
dc.subject	Rehabilitation	en
dc.subject	Spatial econometric analysis	en
dc.subject.classification	Transportation	en
dc.subject.classification	Transportation Science & Technology	en
dc.subject.other	Average cost	en
dc.subject.other	Contract costs	en
dc.subject.other	Contract management	en
dc.subject.other	Cost saving	en
dc.subject.other	Cost savings	en
dc.subject.other	Design build	en
dc.subject.other	Econometric analysis	en
dc.subject.other	Econometric modeling	en
dc.subject.other	Expected costs	en
dc.subject.other	Explanatory variables	en
dc.subject.other	Highway agencies	en
dc.subject.other	Highway contracts	en
dc.subject.other	Highway maintenance	en
dc.subject.other	Infrastructure maintenance	en
dc.subject.other	Marginal effects	en
dc.subject.other	Project delivery	en
dc.subject.other	Spatial effect	en
dc.subject.other	Costs	en
dc.subject.other	Highway administration	en
dc.subject.other	Maintenance	en
dc.subject.other	Outsourcing	en
dc.subject.other	Patient rehabilitation	en
dc.subject.other	Privatization	en
dc.subject.other	Cost benefit analysis	en
dc.subject.other	estimation method	en
dc.subject.other	innovation	en
dc.subject.other	maintenance	en
dc.subject.other	methodology	en
dc.subject.other	project management	en
dc.subject.other	transportation infrastructure	en
dc.title	Contracting in highway maintenance and rehabilitation: Are spatial effects important?	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.tra.2009.12.002	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.tra.2009.12.002	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	Highway agencies around the world strive to improve practices for infrastructure maintenance and rehabilitation, using project delivery policies that range from total 'in-house' responsibility to complete privatization, with a number of flexible contracting policies such as performance-based contracting, variants of design-build-maintain, and lane rentals among others between these two extremes. In this paper, we present a methodology that duly accounts for underlying spatial effects and estimates the expected cost savings of innovative contracting policies for highway maintenance and rehabilitation relative to in-house execution of these activities. Spatial econometric modeling is used to analyze highway contract data from 49 countries. We also investigate the marginal effects of key explanatory variables on contract cost savings using spatial multipliers. Our findings show that there are significant relationships between cost savings and contract characteristics, and that there is an apparent direct relationship between the average cost savings of contracts in a country and contract average cost savings and contract sizes in neighboring countries. (C) 2009 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Transportation Research Part A: Policy and Practice	en
dc.identifier.doi	10.1016/j.tra.2009.12.002	en
dc.identifier.isi	ISI:000275992800002	en
dc.identifier.volume	44	en
dc.identifier.issue	3	en
dc.identifier.spage	136	en
dc.identifier.epage	146	en