FEDERAL SIGNAL CORP /DE/https://pcaobus.org/form-ap-filings/36346/36346FEDERAL SIGNAL CORP /DE/363463/22/2019 11:19:38 PM20183c8a68a7-5967-42ef-8cb9-e6c962efc41734Deloitte & Touche LLP12043FEDERAL SIGNAL CORP /DE/277509FSS0003410682Mindy Jean Ponton0003410682True