U.S. Army Rail Car Lettering

NOTES: Source is Army Regulation 56-3 “Management of Army Rail Equipment”.

Numbering Digit Count:

5 Digits for Continental United States-based equipment.
6 Digits for Outside-of-Continental United States-based equipment.

Special Car Prefixes (CONUS/OCONUS)
(Number Range from 1 to 9999)

Prefix

Type or gauge

AR

Auto railers

D

Dump cars

J

Prison cars

M

Maintenance of way, motor cars

MC

Mortuary cars

P

Push cars

PM

Passenger motor cars

SN

Snow plows

T

Trackmobiles

Locomotive Numbering -CONUS

Numbers

Type or gauge

Capacity

600 through 999

Steam

All

3800 through 3999

Diesel electric

59 tons or less

4001 through 4199

Diesel electric

60-79 tons

4200 through 4399

Diesel electric

80-99 tons

4400 through 4599

Diesel electric

100-119 tons

4600 through 4799

Diesel electric

120 tons or more

4800 through 4999

Gas mechanical

All

5000 through 5199

Diesel mechanical

All

Rolling stock numbers (CONUS)

Numbers

Type or gauge

C-1 through C-999

Rail cranes

G-1 through G-999

Guard cars

K-89667 through K-90000

Kitchen cars

MP-(serial number)

Multiple-purpose cranes

S-1 through S-49999

Sleepers, troop

W-1 through W-999

Work train cars (bunk, shop, store, crew)

1 through 99

Special cars (boiler, instruction, test, special device, office)

100 through 899

Passenger-type cars (baggage coaches)

900 through 999

Cabooses

89000 through 89099

Hospital cars (old type)

89100 through 89999

Hospital cars (ward, ward dressing, ambulance)

6000 through 18999

Tank cars (all except water)

19000 through 19999

Tank cars (water only)

20000 through 21999

Box cars – 39 tons or less

22000 through 24999

Box cars – 40-49 tons

25000 through 28999

Box cars – 50-59 tons

29000 through 29999

Box cars – 60 tons or more

30000 through 31999

Flat cars – 39 tons or less

32000 through 34999

Flat cars – 40-49 tons

35000 through 37999

Flat cars – 50-79 tons

38000 through 38850

Flat cars – 100-130 tons

38851 through 38999

Well flat cars – 85-200 tons

39000 through 39199

Flat cars – 100-110 tons

39500 through 39699

Flat cars – 80-99 tons

39780 through 39809

Depressed center flat cars – 140 tons

39810 through 39882

Flat cars (all other) – 140-149 tons

39833 through 39849

Well flat cars – 150-174 tons

39850 through 39898

Depressed center flat cars – 175 tons

39899 through 39999

Flat cars – 175 tons or more

40000 through 44999

Flat cars (M-1 tank) – 140-149 tons

45000 through 47999

Gondola cars – 50-59 tons

48000 through 49999

Gondola cars – 60 tons or more

50000 through 51999

Self-clearing gondola and hopper cars – 39 tons or less

52000 through 54999

Self-clearing gondola and hopper cars – 40-49 tons

55000 through 57999

Self-clearing gondola and hopper cars – 50-59 tons

58000 through 59999

Self-clearing gondola and hopper cars – 60 tons or more

60000 through 69999

Refrigerator cars

Non-Standard Gauge Equipment (CONUS)

Numbers

Type

1900 through 1999

Locomotives

90000 through 94999

Rail equipment other than locomotives

Locomotives of all gauges (OCONUS)

Numbers

Type or gauge

Capacity

2000 through 2999

Diesel electric

100 tons or more

3000 through 3999

Diesel electric

49-99 tons

4000 through 5999

Diesel electric

48 tons

6000 through 6999

Diesel electric

Under 48 tons

9000 through 9999

Steam and other

All

Standard and multi-gauge rolling stock (OCONUS)

Numbers

Type or gauge

Capacity

C-1000 through C-1999

Rail cranes

All

G-1000 through G-1999

Guard cars

All

K-50000 through K-50999

Kitchen cars (old type)

All

K-51000 through K-99999

Kitchen cars (troop and hospital)

All

MP-(serial number)

Multiple-purpose cranes

All

S-50000 through S-99999

Sleepers, troop

All

W-1000 through W-9999

Work train cars (bunk, shop, store, crew)

All

7000 through 7099

Hospital cars (ward, ward dressing, ambulance)

All

100000 through 100999

Special cars (boiler, instruction, test, special device)

All

101000 through 109999

Caboose cars

All

110000 through 119999

Tank cars

All

120000 through 129999

Refrigerator cars

All

200000 through 239999

Box cars

19 tons or less

240000 through 299999

Box cars

20-29 tons

300000 through 359999

Box cars

30-39 tons

260000 through 399999

Box cars

40 tons or more

400000 through 449999

Flat cars

29 tons or less

450000 through 499999

Flat cars

30 tons or more

500000 through 549999

Gondola cars

29 tons or less

550000 through 569999

Gondola cars (high side)

30 tons or more

570000 through 599999

Gondola cars (low side)

30 tons or more

600000 through 699999

Self-clearing gondola and hopper cars

All

Rail equipment other than standard gauge and multi-gauge (OCONUS)

Numbers

Type or gauge

700000 through 749999

Tank cars

750000 through 799999

Box cars

800000 through 849999

Flat cars

850000 through 899999

Gondola cars

900000 through 949999

Self-clearing gondola and hopper cars

950000 through 950499

Hospital cars

950500 through 959999

Caboose cars

960000 through 969999

Work cars

970000 through 979999

Special cars