The form of the vehicles indication(JNR Steam Locomotive)

Example

‚b ‚U‚Q ‚P‚V
*a@*b@ *c

*a : The number of power wheel

sign B C D E
number of power wheel 2 3 4 5

*b : A form number by the kind

  1. 10`49  Tank type : A water tank and a coal box were installed in the locomotive itself.
  2. 50`99 Tender type : Tender car which loaded water and coal was coupled behind the locomotive.

* c : Manufacture number

And, there is classification by the arrangement of the shaft besides the above. (This isn't written in the body.)

Shaft arrangement *1 JNR form White form Name Use Typical locomotive of JNR
©front@@›œœœ 1C 2-6-0 morgal both C50,C56,8620
›œœœ› 1C1 2-6-2 prairie both C12,C58
›œœœ›› 1C2 2-6-4 anti-pacific both C10,C11
››œœœ› 2C1 4-6-2 pacific exp.passenger C51-C55,C57,C59
››œœœ›› 2C2 4-6-4 hudson C60,C61,C62
›œœœœ 1D 2-8-0 consolidation freight
pass get over		 9600
›œœœœ› 1D1 2-8-2 micado D50,D51,D52
›œœœœ›› 1D2 2-8-4 berkshire D60,D61,D62
›œœœœœ›› 1E2 2-10-4 texas heavy freight E10

*1 œ: power wheel @›:head wheel or follow wheel