Lorestan's codes are 31 and 41. In public cars, taxis and governmental cars the letter is always the same. But in ordinary cars the letter (ب) depends on the city.
31
edit51 is Khorramabad county and Doureh County's code and all of the letters are for Khorramabad.
 ۱۲  ۳۴۵
|
 ۳۱ |
41
edit| ۱۲ ۳۴۵
|
۴۱ |
| City | Letter |
|---|---|
| Borujerd | ب |
| Aligudarz | ج |
| Dorood | د |
| Kuhdasht | س |
| Delfan | ص |
| Azna | ط |
| Pol-e-Dokhtar | ق |
| Selseleh | ل |