FSS vs FLR Comparison

Federal Signal Corp designs and manufactures products and integrated solutions for municipal, governmental, industrial, and airport customers. It operates through two segments. The Environmental Solutions Group manufactures and supplies street sweeper vehicles, sewer cleaner and vacuum loader trucks, hydro-excavation trucks, high-performance water blasting equipment, dump truck bodies, and trailers. The Safety and Security Systems Group manufactures and supplies comprehensive systems and products used by law enforcement, fire rescue, and industrial sites to protect people and property. Its offerings include systems for community alerting and industrial communications. The company generates the majority of its revenue from the Environmental Solutions Group segment.

Fluor is one of the largest global providers of engineering, procurement, construction, fabrication, operations, and maintenance services.It serves a wide range of end markets, including oil and gas, chemicals, mining, metals, and transportation. The company's business is organized into three core segments: urban solutions, mission solutions, and energy solutions. Fluor generated $15.5 billion in revenue in 2025.