Selective Entry in Highway Procurement Auctions

When participating in an auction is costly, a potential bidder has to decide whether to enter the auction or not. The extent to which the potential bidders know their private cost before making their entry decisions determines how selective the entry process is. Endogenous selective entry is common in many auctions and it has important implications for designing auctions, in particular, choosing the bid discount policy that is frequently used in public procurements to achieve distributional goals of the government. Prior empirical studies of the bid preferences were based on frameworks that either did not explicitly model endogenous participation or assumed endogenous, but non-selective participation. This study empirically investigated whether the entry process is selective in the highway procurement auctions run by the California Department of Transportation. To this end, the asymmetric affiliated-signal model was adapted to permit endogenous selective entry. Model parameters, including entry costs and distributions of construction costs for regular and fringe companies, were estimated nonparametrically. The results show evidence favoring selective entry of the fringe firms and imply that the level of bid discount required to achieve the procurement buyer’s policy objective may be lower than what is previously found in the literature under the assumption of non-selective entry.