no horns, no sirens
Don't know trains or plow blades too well, but if the top lip of the plow blade were curled over so it would point at a -30 degree angle to the ground, that may deflect enough snow down to at least have some clear vision of the track ahead?
maybe it's not much of a problem to give a toot.
Do those plow cars get placed in front of trains or do they have engines themselves?