Influence of Highway Project Characteristics on Contract Type Selection: Empirical Assessment

Project Discrepancies in Roadway Construction and Preservation: A Statistical Analysis of Public–Private Partnership Contract Types in the US

“…At the same time, activities such as bridge-tunnel, culvert, ditches, gutters and drainage system repair, and maintenance decrease the duration of time delay. These findings are in line with past research (Anastasopoulos et al, 2010a).…”

“…To explore the factors that affect the extent of project discrepancies for each PPP type, linear regression models are estimated for the percentage of cost savings and cost overrun, count data (Poisson) models are estimated for the change orders frequency, and hazard-based duration models are estimated for the time delay. At the pre-planning phase, many transportation agencies are as well interested in identifying factors affecting the likelihood that a project will incur project discrepancies (Gkritza and Labi, 2008;Anastasopoulos et al, 2010aAnastasopoulos et al, , 2014. To that end, the likelihood of cost savings, cost overrun, change orders, and time delay occurrence is investigated, through the use of binary logit and probit models.…”

“…These data have been published in previous studies (Anastasopoulos et al, 2010aNahidi, 2015;Nahidi et al, 2015;Sarwar and Anastasopoulos, 2016a,b) and have since been extended to include new information, in terms of the number of contracts and of the independent variables (i.e., pavement, traffic safety, and operations characteristics). Specifically, the data include information for 645 PPP contracts implemented in the USA between 1996 and 2011.…”

“…A significant amount of past research in PPP projects for roadway construction and preservation has focused on the identification of factors affecting cost savings, cost overrun, time delays, and change orders (Rowland, 1981;Hester et al, 1991;Majid and McCaffer, 1998;Jacoby, 2001;Ellis and Thomas, 2003;Fimpong et al, 2003;Flyvbjerg et al, 2003;Bordat et al, 2004;Odeck, 2004;Assaf and Al-Hejji, 2006;Gkritza and Labi, 2008;Anastasopoulos et al, 2010aAnastasopoulos et al, ,b,c, 2011Anastasopoulos et al, , 2014Serag et al, 2010;Ambituuni, 2011;Irfan et al, 2011;Cantarelli et al, 2012). For example, Odeck (2004) formulated a regression framework to investigate the factors affecting cost overrun in roadway construction projects and found that small-scale projects are more vulnerable to cost overrun.…”

“…Previous research has been devoted on the investigation of the influential factors for each of the aforementioned project discrepancies, independently of the PPP type. The goal of this paper is to provide a comprehensive comparison of the parameters affecting contract discrepancies of popular PPP types, such as cost-plus-time (A + B), 1 performancebased contracting (PBC), (Mallet, 2008;Anastasopoulos et al, 2010a;Papajohn et al, 2010).…”