by Deval
While going thru some old pictures, I noticed the F40PHM-2 locos working on the BN line have red beacons next to the orange one and a red mars light next to the white/clear one on the roof.
Older photos show them still installed, but I have not found a photo of either in use. What was/is the purpose of the red beacons and Mars lights?
Older photos show them still installed, but I have not found a photo of either in use. What was/is the purpose of the red beacons and Mars lights?