Walker Brothers is a signal company based out of Lexington, South Carolina. Their company is fairly new as far as traffic signal manufacturers go, and they aren't very well known. Walker Brothers signals dominate much of South Carolina, replacing much of the older LFEs that once dominated the region. Walker Brothers signals resemble Econolite's "button back" signal, but with a more pronounced figure. It is rare to see a Walker Brothers signal outside of South Carolina, but some can still be spotted in northeast Georgia, as well as extreme southern North Carolina. They exist in the wild, albeit very rarely, as far away as Maine. These signals are designed to fit Poly-LFE and Siemens/Mark IV SIG (SG) heads.