Federal Signal Corp. engages in the design and manufacture of products and integrated solutions for municipal, governmental, industrial, and commercial customers. It operates through the Environmental Solutions Group and Safety and Security Systems Group segments. The Environment Solutions Group segment is involved in the manufacture and supply of street sweeper vehicles, sewer cleaners, vacuum loader trucks, hydro-excavation trucks, and water blasting equipment. The Safety and Security Systems Group segment offers comprehensive systems and products that law enforcement, fire rescue, emergency medical services, campuses, military facilities, and industrial sites use to protect people and property. The company was founded in 1901 and is headquartered in Oak Brook, IL.