UNSPSC 39121620: Transient protection materials

Transient protection modules, when combined with other measures, can help prevent problems caused by voltage transients. Transient energy may come from several sources, most typically environmental conditions or induced by switching heavy inductive loads. Sensors, readers, IT installations, etc., can be seriously affected if they are not protected.

UNSPSC 39121620 Transient protection materials, a Commodity code, encompasses traffic signal equipment, detection systems, control cabinets, and related infrastructure that state and local governments procure to build, maintain, and upgrade traffic control networks. Recent opportunities show state and local buyers purchasing traffic signal controllers and cabinet assemblies, detection and sensing systems, poles and mast arms, pedestrian signal buttons, LED signal heads, battery backup units, and specialized components such as bus interface units and communication managers for adaptive and coordinated traffic management systems.

The issuing bodies soliciting under this code span state transportation departments (Texas Department of Transportation, Kentucky Transportation Cabinet), county governments (Pasco County and Okaloosa County in Florida, Collier County in Florida, Broward County in Florida, Gwinnett County in Georgia, Marion County in Florida, Thomas County in Georgia), cities (Manchester Connecticut, Brownsville Texas, Tucson Arizona, Orlando Florida, Tallahassee Florida, Temple Texas, Detroit Michigan, Dallas Texas, Olathe Kansas, Madison Wisconsin, Boulder Colorado), and one regional transit authority context. Texas Department of Transportation appears repeatedly across multiple recent opportunities for controllers, cabinet assemblies, UPS systems, sensors, and pole-mounted equipment. Geographic concentration centers on Texas, Florida, Colorado, Kansas, Connecticut, and Georgia, with scattered activity across the Midwest and Southeast. Representative recent opportunities include the Town of Manchester, Connecticut's on-call traffic signal maintenance and repair RFQ (ITB 26/27-13, due November 6, 2026) covering emergency and non-emergency services across 97 town and state intersections with prevailing wage and DBE compliance; the City of Brownsville, Texas traffic monitoring and management of signalized roads project (IFB #14-26, due May 28, 2026) for controller and CCTV system installation at multiple intersections funded through federal STBG-MM grants; Pasco County, Florida's traffic signal construction ITBs for box-span installations at specific intersections (due October 27, 2026 and June 16, 2026); and TxDOT's repeated procurements for cabinet assemblies, controllers, UPS systems, and sensor equipment under multiple IFBs throughout 2026, many advertised as proprietary or sole-source under Texas Government Code 2155.067. These opportunities routinely carry federal compliance obligations (Davis-Bacon, Buy America, BABA) when funded through federal highway or grant programs, and many require TxDOT prequalification, FDOT prequalification, or equivalent state-level vendor qualification.