N.C. Gen. Stat. § 136-89.220

The Authority may enter into reciprocal agreement with other tolling jurisdictions to enforce toll violations. Such an agreement shall provide that, when another toll agency certifies that the registered owner of a vehicle registered in this State has failed to pay a toll, processing fee, or civil penalty due to that toll agency, the unpaid toll, processing fee, or civil penalty may be enforced by the Authority placing a renewal block as if it were an unpaid toll, processing fee, or civil penalty owed to this State under G.S. 136-89.217. Such agreement shall only be enforceable, however, if all of the following are true:

(1) The other toll agency has its own effective reciprocal procedure for toll violation enforcement and does, in fact, reciprocate in enforcing toll violations within this State by withholding the registration renewal of registered owners of motor vehicles from the state of the other toll agency.

(2) The other toll agency provides due process and appeal protections to avoid the likelihood that a false, mistaken, or unjustified claim will be pursued against the owner of a vehicle registered in this State.

(3) The owner of a vehicle registered in this State may present evidence to the other toll agency by mail or other means to invoke rights of due process without having to appear personally in the jurisdiction where the violation allegedly occurred.

(4) The reciprocal violation enforcement arrangement between the Authority and the other toll agency provides that each party shall charge the other for costs associated with registration holds in their respective jurisdictions.