Detection of Collusive Tenders in Infrastructure Projects: Learning from Operation Car Wash

Signor, Regis and Love, Peter E. D. and Belarmino, Alexanders T. N. and Olatunji, Oluwole Alfred ORCID: (2020) Detection of Collusive Tenders in Infrastructure Projects: Learning from Operation Car Wash. Journal of Construction Engineering and Management, 146 (1):05019015. pp. 1-10. ISSN 0733-9364


Procurement practices are often characterized by competitive tendering. The overarching purpose of this is to ingrain transparency, probity, and value for money into the processes of acquiring goods and services. When tenderers collude and clients are unable to detect them, bids will become uncompetitive. Yet, there have been a limited number of effective practical tools and methods developed that can be used by procurement authorities, controllers, and public officials to detect collusive tendering. Using data obtained from the Brazilian Federal Police and their ongoing criminal investigation titled Operation Car Wash, a robust and practical probabilistic method is developed. The main findings were that the method was able to accurately identify (81%–96%) the occurrence of collusion during a sealed tendering process. Conclusions are drawn from the lessons learned from the forensic investigations, indicating that the approach presented for detecting collusive behavior during tendering is grounded in reality. This paper presents a new way to utilize statistics and probability to identify the presence of and control collusion in public- and private-sector tendering.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 03 May 2022 23:13
Last Modified: 31 May 2022 03:43
Uncontrolled Keywords: Brazil; Corruption; Collusion; Public procurement; Sealed tender
Fields of Research (2020): 33 BUILT ENVIRONMENT AND DESIGN > 3302 Building > 330299 Building not elsewhere classified
33 BUILT ENVIRONMENT AND DESIGN > 3302 Building > 330207 Quantity surveying
33 BUILT ENVIRONMENT AND DESIGN > 3302 Building > 330203 Building industry studies
Socio-Economic Objectives (2020): 12 CONSTRUCTION > 1299 Other construction > 129999 Other construction not elsewhere classified
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