Refrigerator Car - AAR Classifications

AAR Classifications

AAR classifications of refrigerator car types
Class Description Class Description
RA Brine-tank ice bunkers RPB Mechanical refrigerator with electro-mechanical axle drive
RAM Brine-tank ice bunkers with beef rails RPL Mechanical refrigerator with loading devices
RAMH Brine-tank with beef rails and heaters RPM Mechanical refrigerator with beef rails
RB No ice bunkers — heavy insulation RS Bunker refrigerator — common ice bunker car
RBL No ice bunkers and loading devices RSB Bunker refrigerator — air fans and loading devices
RBH No ice bunkers — gas heaters RSM Bunker refrigerator with beef rails
RBLH No ice bunkers — loading devices and heaters RSMH Bunker refrigerator with beef rails and heaters
RCD Solid carbon-dioxide refrigerator RSTC Bunker refrigerator — electric air fans
RLO Special car type — permanently enclosed (covered hopper type) RSTM Bunker refrigerator — electric air fans and beef rails
RP Mechanical refrigerator
  • Note: Class B refrigerator cars are those designed for passenger service; insulated boxcars are designated Class L.

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