UNSPSC 46161525: Vehicle detection loop coil

A detector that is designed to detect the conversion signal with the change of high frequency inductance that is formed on the coil part as the vehicle enters on top of the loop coil by sending the constant high frequency magnetic signal current with the burial on the road surface.

UNSPSC 46161525 Vehicle detection loop coil is a Commodity code under which state and local governments procure traffic loop detectors, piezoelectric axle sensors, and related field equipment for roadway traffic monitoring and signal control. The scope encompasses replacement, repair, and restoration of inductive loop detectors installed in roadway pavements to detect vehicle presence and flow, as well as associated hardware such as pull boxes, termination kits, detector lead-in cable, controller cabinets, and solar power systems. State and local transportation agencies—primarily state departments of transportation, county transportation departments, transit authorities, and municipal traffic engineering divisions—issue the solicitations under this code. The California Department of Transportation (Caltrans) appears as a repeat buyer, having posted multiple on-call and project-specific loop detector replacement and restoration contracts in recent months.

Recent opportunities span California and Florida. Caltrans issued IFB 11A4344 for traffic loop repair and replacement across Imperial and San Diego Counties (due August 27, 2026, estimated award September 3, 2026) covering approximately 85 loop detectors and 20 piezoelectric sensors, with a bid cap of $484,000 and a three-year on-call contract term; IFB 05A2967 for inductive loop detector replacement across Santa Barbara, San Luis Obispo, Monterey, San Benito, and Santa Cruz Counties (due July 23, 2026, estimated award August 5, 2026) covering approximately 385 detectors; and a Small Business Minor B contract (11A4415) in San Diego County (due May 18, 2026) at $305,000 estimated cost for loop detector, controller, and solar power installation at 12 project sites. Marion County, Florida, posted a re-solicitation for TRAX Apollyon traffic counters (due May 6, 2026), though that procurement emphasizes data collection software compatibility over loop coil hardware and represents a tangential application. Caltrans contracts require Class A General Engineering or C-10 Electrical Contractor licenses with C-31 Construction Zone Traffic Control certification; California prevailing wage and Department of Industrial Relations registration apply. Small business preferences of 5 percent and DVBE participation incentives and requirements appear in Caltrans solicitations.