Indiana Code Title 9. Motor Vehicles § 9-28-4-1

Sec. 1. The bureau shall confer with officials of other states, commonwealths, and the District of Columbia for the purpose of agreeing upon establishing and maintaining fair, equitable, and satisfactory reciprocity arrangements and plans for the movement of motor vehicles from, to, and between the different state, commonwealth, and the District of Columbia of the United States and regulating the use of the same on the roads and highways of Indiana.