Do I need to pay road tax again if I transfer my private car from 1 state to another

[PolicyWala]

Yes, You need to get your register afresh in the new state. You'll be issued a new number for your car. In my opinion, NOC is just to ensure that there is no criminal history or alike any objection for this registration. By this way, they also track the car registered in new state in the old state's transport records.

[koolz]

If you are going to stay less than one year then you need to pay the Road tax and if the car less than a year old then entry tax also. Registration is required if more than one year of stay is expected.