Quote from: jward on October 20, 2014, 11:13:17 AM
Growing up in a model railroading family we always called them conversion cars. Transition cars were bilevel passenger cars with low end doors on one end which were used to connect single level and bilevel cars.
Conversion cars is all I ever heard them called also. They convert you train from the HH couplers to the knuckle type coupler.