Federal Signal (NYSE: FSS) reported quarterly earnings of $1.42 per share which beat the analyst consensus estimate of $1.29 by 10.08 percent. This is a 21.37 percent increase over earnings of $1.17 per share from the same period last year. The company reported quarterly sales of $670.200 million which beat the analyst consensus estimate of $667.091 million by 0.47 percent. This is a 18.70 percent increase over sales of $564.600 million the same period last year.