Introduction of bw cabooses would depend on individual railroads, and their need for new units. They would've been around until all cabooses were phased out, early to mid 80's for most railroads if I'm not mistaken.
Hi Mike!![]()
As far as caboose many still remain in service where long reverse moves are made such as locals and mine runs..Many of these cabooses are fully functional.
there has to be a year they was invented tho.......