Ottawa Valley Associated Railroaders
Celebrating 50 years of railroading!

 

To begin with, here is a list of AAR Codes and their meanings. AAR codes are used to specify the type of rolling stock in a concise, meaningful way, when it is interchanged.

Code Description
BE Baggage express
BR Express refer with ice bunkers
BVA Express baggage with ventilation
CA Combine baggage/passenger car
CS Combine baggage/smoking car
CSB Combine baggage/dormitory car
DA Full diner car
DB Cafe/snack car
DL Buffet/lounge car
FA A flat car specifically equipped with superstructure or containers for transporting setup vehicles, not suitable for misc. commodities.
FB Bulkhead flat cars. Equipped with fixed or permanently attached movable bulkheads or ends a minimum of three feet in height and flat floor for general commodity loading.
FC Flat cars, specifically equipped to carry trucks, trailers, or removable trailer bodies for the transportation of freight in road exchange service.
FCA Flat car, articulated multi-unit, specially equipped to carry trucks, containers or removable trailer bodies for the transportation of freight in road exchange service.
FD Depressed center flat car of special construction having the portion of floor extending between trucks depressed to provide necessary overhead clearance for lading.
FL Flat logging car or logging truck. This is either an ordinary flat car or car consisting of two trucks fitted with cross supports over the truck bolsters; the trucks connected by a skeleton or flexible frame and logs loaded lengthwise on the cross supports
FM Ordinary flat car for general service. This car has flooring laid over sills and without sides or ends.
FW Flat car with hole to enable lading to be lowered due to clearance limits.
GA An open top car, having fixed sides and ends and drop bottom, consisting of doors hinged cross-wise of car to dump between the rails.
GAR A covered top car, having fixed sides and ends and drop bottom, consisting of doors hinged cross-wise of car to dump between the rails.
GB An open top car, having fixed sides, fixed or drop ends and solid bottom.
GBR A covered top car, having fixed sides, fixed or drop ends and solid bottom.
GD An open top car, having fixed or drop ends, solid bottom and sides equipped with doors for dumping.
GDR A covered top car, having fixed or drop ends, solid bottom and sides equipped with doors for dumping.
GH An open top car, having fixed sides, drop ends and drop bottom, consisting of doors hinged at center sill to dump outside of rails.
GHR A covered top car, having fixed sides, drop ends and drop bottom, consisting of doors hinged at center sill to dump outside of rails.
GS An open top car, having fixed sides and ends and drop bottom, consisting of doors hinged at center sill or side sills to dump outside and/or inside of rails.
GSR A covered top car, having fixed sides and ends and drop bottom, consisting of doors hinged at center sill or side sills to dump outside and/or inside of rails.
GT An open top car, having high fixed sides and fixed or hinged ends and solid bottom, suitable for unloading on dumping machines only.
GTR A covered top car, having high fixed sides and fixed or hinged ends and solid bottom, suitable for unloading on dumping machines only.
GW Open top well-hole car for transportation of special commodities. A solid bottom car with fixed sides and ends, having one or more openings or depressions in floor permitting the lading to be lowered in order to obtain overhead clearance.
GWR A covered top well-hole car for transportation of special commodities. A solid bottom car with fixed sides and ends, having one or more openings or depressions in floor permitting the lading to be lowered in order to obtain overhead clearance.
HFA An open top self-clearing car, having fixed sides and ends, and bottom consisting of divided hoppers with doors hinged lengthwise for dumping outside and/or inside of the rail; also one divided hopper at each end, extending from end of car to bolster with doors hinged length-wise of car and dumping outside of rails.
HFAR A covered self-clearing car, having fixed sides and ends, and bottom consisting of divided hoppers with doors hinged lengthwise for dumping outside and/or inside of the rail; also one divided hopper at each end, extending from end of car to bolster with doors hinged length-wise of car and dumping outside of rails.
HK An open top self-clearing car, having fixed sides and ends, and bottom consisting of two or more divided hoppers dumping outside or inside of rails ( includes former "HD").
HKR A covered self-clearing car, having fixed sides and ends, and bottom consisting of two or more divided hoppers dumping outside or inside of rails ( includes former "HD").
HM An open top self-clearing car, having fixed sides and ends, and bottom consisting of two divided hoppers with doors hinged crosswise of car and dumping between rails.
HMA An open top self-clearing car, having fixed sides and ends, and bottom consisting of two divided hoppers with doors hinged length- wise of car and dumping between rails.
HMAR A covered self-clearing car, having fixed sides and ends, and bottom consisting of two divided hoppers with doors hinged length-wise of car and dumping between rails.
HMR A covered self-clearing car, having fixed sides and ends, and bottom consisting of two divided hoppers with doors hinged crosswise of car and dumping between rails.
HT An open top self-clearing car, having fixed sides and ends, and bottom consisting of three or more divided hoppers with doors hinged crosswise of car and dumping between rails.
HTA An open top self-clearing car, having fixed sides and ends, and bottom consisting of three or more divided hoppers with doors hinged lengthwise of car and dumping between rails.
HTAR A covered self-clearing car, having fixed sides and ends, and bottom consisting of three or more divided hoppers with doors hinged lengthwise of car and dumping between rails.
HTR A covered self-clearing car, having fixed sides and ends, and bottom consisting of three or more divided hoppers with doors hinged crosswise of car and dumping between rails.
LC Boxcar with side doors and roof hatches. May be equipped with end doors.
LF Flat car equipped to handle one or more demountable containers for transportation of commodities not under refrigeration. Not applicable to flat cars designed to handle containers in road exchange service or containers handling setup vehicles
LG A gondola car equipped to handle one or more demountable containers for transportation of commodities not under refrigeration.
LM A car equipped with one or more permanently enclosed containers or tanks, provided with one or more openings for loading and equipped for pneumatic or gravity unloading. Car is suitable for handling certain dry powdered or granular commodities, and also low viscosity, non-dangerous liquid commodities.
LO A permanently enclosed car, other than a boxcar, regardless of exterior or interior shape, for handling bulk commodities, with or without insulation and provided with openings for loading through top or sides with weather-tight covers or doors. Car may be provided with one or more bottom openings for unloading , with tight fitting covers, doors, valves, or tight fitting slide or gate to prevent leakage of lading. Car may be provided with facilities for discharge of lading through openings and tops and sides and may have one or more compartments. Mechanical or other means may be provided within car to expedite loading or unloading.
LP An open top car having solid bottom and fixed ends equipped sloping floor or longitudinal risers or side stakes for handling pulpwood and not suitable for general commodity loading.
LS A car of special construction having two separable interlocking units which form a car body. Units may be separated and the load interposed between and locked in place to form a complete transportation unit.
LU An enclosed car with roof, having a special metal beam at the top of each side to support a series of retractable overhead side doors and their appurtenances, or other types of doors, running substantially the length of the car, which beams also support the roof details. Car may also be equipped with special loading devices or racks for handling various commodities.
MA Railway post office car (RPO)
MB Mail/baggage car
MBE Mail/baggage express
MWB Maintenance of way ballast car
MWC Work caboose
MWD Maintenance of way dump car
MWE Maintenance of way ballast spreader
MWF Maintenance of way work flat car
MWK Maintenance of way snow plow
MWP Maintenance of way pile driver
MWS Maintenance of way steam shovel/ditcher
MWT Maintenance of way tool and block car
MWV Maintenance of way derrick car (on flat car)
MWW Maintenance of way derrick, wrecking (steam or diesel)
MWX Maintenance of way boarding car, kitchen car or portable water car
NE Caboose
PA Passenger coach
PAS Passenger coach/sleeper
PC Parlor/Chair coach
PL Lounge car
PO Observation coach
PS Sleeper car
PT Tourist car (open or closed)
PV Private/office/official car
RB A bunker-less refrigerator car with or without ventilating devices and with or without devices for attaching portable heaters. Constructed with insulation in sides, ends and roof to meet maximum UA factor requirement of 250 BTU/F/Hour for 50' cars and 300 BTU/F/Hour for 60' cars. Effective for cars ordered new after March 1, 1984.
RBL Car similar in construction to a "RB" type car, but equipped in addition with adjustable loading or stowing device.
RP Mechanical refrigerator car equipped with or without means of ventilation and provided with apparatus for protection against heat or cold. Apparatus operated by power other than through the car axle.
RPB Mechanical Refrigerator. Similar to "RP", but designed primarily for use in bulk potato or similar type loading as cars are equipped with interior slope sheets and conveyers and/or equipment for mechanical loading and unloading.
RPC Mechanical Refrigerator. Similar to "RP", but equipped with permanently affixed containers.
RPL Mechanical Refrigerator. Similar to "RP", but equipped in addition with adjustable loading or stowage device.
RS Bunker refrigerator car equipped with ice bunkers. Designed primarily for use of chunk ice and with or without means of ventilation
SA Stock Car. A car equipped for transport of stock on hoof ( except horses and mules), equipped with roof, slatted sides and doors and fixed deck located sufficiently high to permit the loading of cattle on the lower deck. with or without feed and water troughs.
SC Car for transportation of livestock equipped with roof, slated sides and doors, and double deck. with or without feed or water troughs.
SM Car for transportation of livestock equipped with roof, slated sides and doors, and single deck. with or without feed or water troughs.
ST Car for transportation of livestock equipped with roof, slated sides and doors, and fixed triple deck. with or without feed or water troughs.
T Tank car means any car which is used only for the transportation of liquids, liquefied gases, compressed gases or solids that are liquefied prior to unloading. Car maybe without underframe if superstructure is designed to serve as underframe. If car has underframe, it must be designed only for the carriage of one or more enclosed containers (with or without compartments) that form the superstructure and are an integral parts of the car. All such containers must be securely attached to the underframe when offered for transportation but may have demountable features.
TA Tank car with special lining for transportation of acid or other toxic material.
VA Ventilated boxcar similar in design to "XM" but with continuous open-air exposure.
XF Non-insulated boxcar similar in design to "XM", designed and specially prepared with a U.S Food and Drug Administration approved white epoxy or other comparable white coating to seal interior walls, doors and ends, and provide a smooth durable surface to prevent contamination.
XI Insulated boxcar similar in design to "XM", designed and specially prepared with a U.S Food and Drug Administration approved white epoxy or other comparable white coating to seal interior walls, doors and ends, and provide a smooth durable surface to prevent contamination.
XL Loader Equipped. Box car similar in design to "XM", with steel perforated side walls or equipped with interior side rails for securement of certain types of lading and/or permanently attached movable bulkheads
XM Box car for general service equipped with side or side and end doors.
XP A Box car similar in design to a "XM", but specially equipped for specific commodity loading and not suitable for general commodity loading. A brief description and the particular kind of lading for which intended must be included in the Description column in the Official Railway Equipment Register.
XT A house car with or without doors either metal lined or enclosing one or more tanks.