ECONOLITE: California, Washington, Oregon, Idaho, Alaska, Hawaii, Nevada, Utah, Arizona, New Mexico, Colorado, Wyoming, Montana, Maine, New Hampshire, Vermont, Massachusetts, Connecticut, Maryland, Washington, D.C., Delaware, Virginia, Canada, Mexico, Caribbean.
BROWN TRAFFIC PRODUCTS: Illinois, Iowa, Minnesota, Missouri, Nebraska, North Dakota, South Dakota
CARRIER AND GABLE: Michigan, Indiana
NORTHEAST SIGNAL: New York, New Jersey, Eastern Pennsylvania
PATH MASTER: Ohio, West Virginia, Western Pennsylvania
TAPCO: Wisconsin
TEMPLE: Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, South Carolina, Tennessee
TEXAS HIGHWAY PRODUCTS: Texas