EMs are found on many railroad crossings on the west coast. Many different companies made EMs starting with Griswold. After Griswold, other companies such as RACO, Safetran, and even Western Cullen Hayes made EMs! Sadly, all the class 1 railroads have been slowly replacing the EMs. Luckily, there still is a handful of them out there and we are trying to list as many as possible.
Griswold EM 5th Street, Davis, California
RARE Raco EM E 8th Street, Davis, California
Safetran EMs Howsley Rd, Pleasant Grove, CA
Safetran & Raco EM's. Russell Street, Missoula, Montana
Safetran Em's Montana Ave in East Helena, Montana
Griswold EM's Benton Ave in Helena, Montana