During this time, Federal Electric came under the ownership of Commonwealth Edison, eventually becoming a part of the utility empire of Samuel Insull.

Longtime engineer Earl Gosswiller patented the Beacon-Ray and TwinSonic products, which were popular emergency vehicle lightbars.

[9] On November 17, 2022, Federal Signal announced the signing of a definitive agreement to acquire substantially all the assets and operations of Blasters, Inc. (“Blasters”), a leading manufacturer of truck-mounted waterblasting equipment, for an initial purchase price of $14 million, subject to post-closing adjustments.

The initial purchase price, which was funded through existing cash on hand and borrowings under the Company's revolving credit facility, was subject to certain customary adjustments for working capital and debt-like items.

In addition, there was a contingent earn-out opportunity included of up to $15 million, based on the achievement of specified financial targets during 2025.

Additionally, Federal Signal entered into a definitive agreement to acquire Hog's primary manufacturing facility in Stuart, Florida for $14.5 million.