This Illinois Department of Transportation (IDOT) solicitation seeks the supply of new, U.S.-manufactured metal round yellow sign posts and related post‑wedge shims for District 1. The award will be made under an Invitation for Bid (IFB) on a lowest‑price basis, with no subcontracting permitted. Bids must be submitted electronically through BidBuy, and vendors must provide a signed contract, offer, and appropriate vendor disclosures. Key contract obligations include a one‑year fade‑resistant coating warranty, delivery within 30 business days of order receipt (Monday‑Thursday, 8 AM‑3 PM), and the possibility of providing a free sample within ten business days if requested. The contract term is twelve months, with the potential for extensions up to a total of ten years.