CAL SIGNAL: Northern California
ECONOLITE: Washington, Oregon, Idaho, Alaska,
BROWN TRAFFIC PRODUCTS: Illinois, Iowa, Minnesota, Missouri, Nebraska, North Dakota, South Dakota
CARRIER AND GABLE: Michigan, Indiana
GADES SALES: Kansas, Utah, Oklahoma
JTB: Southern California
NORTHEAST SIGNAL: New York
PATH MASTER: Ohio, West Virginia, Western Pennsylvania
SIGNAL CONTROL PRODUCTS INC: Central and Eastern Pennsylvania, New Jersey, Delaware
TAPCO: Wisconsin
TEMPLE: Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, South Carolina, Tennessee
TEXAS HIGHWAY PRODUCTS: Texas
WESTERN SIGNAL: Wyoming, Colorado, New Mexico, Arizona