["< sod >'''federal signal corporation'''itself is a global operating corporation with about 2, 800 plus employees located in oak brook, illinois. federal signal designs, develops and deploys solutions intended to protect people, property and the environment under brands including federal signal, elgin, pacific guzzler, jetstream, vactor and victor. < ref > { { cite web | url = https : / / www. federalsignal. com / our - companies | title = even our companies | website = federal signal | accessdate = 13 may 2016 } } < / ref > < eod > < sod >'''federal signal corporation'''is a global corporation working with about 2, 800 employees located in oak rock brook, illinois. federal state signal is best known for its variety of emergency lighting, sirens, industrial equipment, and public safety [ [ solution ] ] s under brands including federal signal, elgin, guzzler, jetstream, vactor and victor. < ref > { { cite web | url = https : / / www. federalsignal. com / and our - companies | » title = our companies | website = federal signal | accessdate = 13 may 2016 } } < / ref > < eod >"]