modeling the WWSL: 9.0.3 Rolling Stock

General
The AAR Car Type designation under the UMLER system includes the following data
•
The first letter of the code is "T" for tank car • The next two numbers define the "Maj or Class Description" 05 Acid Cars, Welded or Riveted I 0 General Service Cars -Carbon Steel Tank (Welded or
Riveted, Includes Rubber-Lined) 38 Steel Pressure Non-Insulated Cars 56 Steel Pressure Insulated
Cars • The third number is the car's capacity (There are about 65 additional "Major
Class Descriptions," including no. 77 for helium cars, but these four cover the most common
tanks). TANK CARS - UMLER CODING T = Tank Cars First and Second Numeric Major Class Description (See Exhibit M) Third Numeric o = Capacity not applicable 1 = 7,000 gal. and less capaity 2 = 8,000 through 9,000 gallons capacity 3 = 10,000 through 11,000 gallons capacity 4 = 12,000 through 18,000 gallons capacity 5 = 19,000 through 21 ,000 gallons capacity 6 = 22,000 through 24,000 gallons capacity 7 = 25,000 through 27,000 gallons capacity 8 = 28,000 through 31,000 gallons capacity 9 = 32,000 gallons capacity and over For the purpose of determining capacity for coding, the following is used: 6.500 to 7,499 gallons - show as 7,000 gallons capacity 7,500 to 8,499 gallons - show as 8,000 gallons capacity 8,500 to 9,499 gallons - show as 9,000 gallons capacity The "AAR
Car Type" code then, can identify just about everything you might want to know about a tank car
except its actual roportions

9.0.3.1 Passenger Cars