Vehicle Registration Number or Codes for Tamilnadu, India
Numbering of vehicle in India is done at Regional/Sub Regional Transport  Offices located in various states. Each vehicle number has prescribed  format. Take an example of a vehicle number TN-75 A 9999, where 'TN'  denotes state code for Tamilnadu State, '75' denotes RTOs code for  Marthandam, 'A' denotes series and '9999' denotes running  serial number between 1 and 9999.       Regional Transport Offices     Current Registration Series   RTO/SRTO Name   Old Registration Series     TN-01     Chennai Central (Chennai District)     MSP,MSV,MSY, MSL, TMP,TMV,TMY, TMU, TMQ,TMM,TMJ,TMF, TMS,TMD, TCX,TSE, TSB,TSH,TSL,TSP, TMB,TMS     TN-02     Chennai North-West (Chennai District)         TN-03     Chennai North-East (Chennai District)         TN-04     Chennai East (Chennai District)     MST, MSW, MSS, MSR, MSQ, MSM,        TMW,          TMT, TMH TSC, TCZ     TN-05     Chennai North (Chennai District)         TN-06     Chennai South-East (Chennai District)   ...