Wagon numbering system in India

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Indian Railways operates India's railway system and comes under the purview of the Ministry of Railways of Government of India. Indian Railways operates more than 4000 cargo and goods trains daily. [1] It hauls variety of cargo to cater to various requirements and have specialized rolling stock corresponding to the cargo hauled. Indian Railways uses a specific wagon numbering system, adopted in 2003. [2]

Contents

Classification

Wagons are allocated 11 digit codes for identification. [2] [3] The first two digits indicate the wagon type, the next two digits indicate wagon ownership, the fifth and sixth digits indicate the year of manufacture, the seventh through tenth digits indicate unique wagon number and the last digit is a check digit.

Wagon type

These two digits indicate the type of wagon. [4] [2] There are 243 types of rolling stock used for cargo operations. [5] These include covered wagons, boxcars, flat wagons, flatbeds, open wagons, hoppers, containers, automobile carriers, defense vehicle carriers and tankers. [6] [7]

BCNHL class covered wagon Indian Railways BCNHL freight wagon.jpg
BCNHL class covered wagon
BCACBM class car carrying wagon BCACBM - B, The car container wagon ( Indian Railways) 2.jpg
BCACBM class car carrying wagon
BTPNM class tank wagon Tank Wagon (BTPNM).jpg
BTPNM class tank wagon
BLC class well wagons BLC Wagon, Indian Railways.jpg
BLC class well wagons
Wagon type classification [8]
ClassificationPrefix
Track gauge
  • B Broad gauge 1,676 mm (5 ft 6 in)
  • M Metre gauge 1,000 mm (3 ft 3+38 in)
  • N Narrow gauge 762 mm (2 ft 6 in)
Wagon type
  • B Bogie wagon
  • BV Brake van
  • V Brake/parcel van
  • O Open wagon
  • C Covered wagon
  • F Flat car
  • FK Flat car for container transport
  • FU Well wagon
  • LA Low flat car with standard buffer height
  • LB Low flat car with low buffer height
  • LAB Low flat car, one end with low buffer, the other with high buffer
  • R Rail-carrying wagon
  • T Tanker
  • U Well wagon
  • W Well wagon
  • K Open wagon: ballast/material/refuse transport
  • C Centre discharge
  • S Side discharge
  • R Rapid (forced) discharge, bottom discharge
  • X Both centre and side discharge
  • X High sided
  • Y Low (medium) side walls
  • L Low sided
  • H Heavy load
Coupling
  • C Center buffer
  • R Screw
  • T Transition
  • N Air-braked
  • M Military
Wagon type code
Open Wagon [2]
Code1011121314151617181920212224
TypeBOXN [9] BOXNHABOXNHSBOXNCRBOXNLWBOXNBBOXNFBOXNGBOYBOST [10] BOXNALBOSTHSBOXNHLBOXNS
Covered Wagon [2]
Code303132
TypeBCNA [11] BCNAHSBCCNR [12]
Tank Wagon [2]
Code4041424344454647
TypeBTPN [13] BTPNHSBTPGLN [14] BTALNBTCS [15] BTPHBTAP [16] BTFLN [17]
Flat Wagon [2]
Code5354555657585960616263646566676869
TypeBLCSABLCSBBRNA [18] BRNAHSBFNS [19] BOMN [20] BRSTHBFATBLCA [21] BLCB [22] BLLA [23] BLLB [23] BRSBFUBRHNEHSBCLBCLA
Hopper Wagon [2]
Code707172737475
TypeBOBYN [24] BOBYNHSBOBRN [25] BOBRNHSBOBRALBOBSN
Well Wagon [2]
Code80818283
TypeBWTBMBWTDBKMMBWZ
Brake Van [2]
Code858687
TypeBVZCBVZI [26] BVCM

Wagon ownership

These third and fourth digits indicate the wagon ownership. This might correspond to specific railway zone or other entities. [2]


Year of manufacture

These fifth and sixth digits indicate the last two digits of the year of manufacture. For example, a wagon manufactured in 2016 will have a code of 16. [2]

Individual Wagon number

Seventh to tenth digits indicate a unique four-digit individual wagon number. This is a running serial number from 0001 to 9999 with numbers from 0001 to 0999 indicating wagons used by departments of Indian Railways and numbers 1000 to 9999 are for other traffic. [2]

Check digit

The last digit is a check digit, which is calculated using a six-step algorithm as indicated below. [2] [27] Let the first ten digits be represented by C1 to C10 with C1 being the first digit, C2 the second digit and so on.
Step 1 : Starting from the left, add all the characters in the even position. S1 = C2 + C4 + C6 + C8 + C10
Step 2 : Multiply the sum by 3 to get S1 x 3
Step 3 : Starting from the left, add all the Characters in the odd position. S2 = C1 + C3 + C5 + C7 + C9
Step 4 : Add the sum of step 2 to the sum of step 3 to get S4 = S1 x 3 + S2
Step 5 : Round this total up to the next multiple of 10.
Step 6 : The check digit is the number required to the added to round up to the next multiple of 10. If the total is already a multiple of 10, the check digit will be zero.

For example, if the first ten digits are given by 3110169521
Step 1 : S1 = C2 + C4 + C6 + C8 + C10 = 1 + 0 + 6 + 5 + 1 = 13
Step 2 : S1 × 3 = 39
Step 3 : S2 = C1+ C3 + C5 + C7 + C9 = 3 + 1 + 1 + 9 + 2 = 16
Step 4 : S4= S1 × 3 + S2 = 39 + 16 = 55
Step 5 : Next 10th multiple of 55 = 60
Step 6 : Check digit = 60 - 55 = 5
Hence the eleventh digit is assigned as 5 for this particular wagon.

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References

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