S.C. Code Ann. § 57-3-800: Reciprocal agreements with other jurisdictions to enforce toll or usage charge violations.

The Department of Transportation may enter into reciprocal agreements with other jurisdictions including the federal government and any state, or agencies or departments thereof, to enforce toll or usage charge violations. The agreement shall provide that, when another jurisdiction certifies that the owner of a vehicle registered in this State has failed to pay a toll or usage charge, processing fee, or civil penalty due to that jurisdiction, the unpaid toll or usage charge, processing fee, or civil penalty may be enforced by placing a registration suspension as if the owner of the motor vehicle has an outstanding judgment for failure to pay a toll or usage charge under Section 56-3-1335, upon electronic notification by the Department of Transportation to the Department of Motor Vehicles. The agreement shall only be enforceable to the extent that:

(1) the other jurisdiction has its own reciprocal procedure for toll or usage charge violation enforcement and does, in fact, reciprocate in enforcing toll or usage charge violations within this State by withholding the registration renewal of registered owners of motor vehicles from such jurisdiction, and the other jurisdiction 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;

(2) drivers and vehicles licensed or registered in this State, while operating on the highways and bridges of the other jurisdiction, shall receive the benefits, privileges, and exemptions of a similar kind with regard to toll or usage charge enforcement as are extended to the drivers and vehicles licensed or registered in the other jurisdiction while they are operating on the highways and bridges of this State;

(3) the owner of a vehicle registered in this State may present evidence to the other toll or usage charge agency or jurisdiction 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 department and the other toll or usage charge agency provides that each party shall charge the other for costs associated with registration holds, or the like, in their respective jurisdictions.