Reason cites CEI's paper by Marc Scribner on automated vehicle platooning:
Platooning is still not allowed in the majority of states. Last month the Competitive Enterprise Institute released its fourth annual edition of “Authorizing Automated Vehicle Platooning: A Guide for State Legislators.” It identifies 20 states that have authorized some version of commercial AV platooning, and assesses the legislation of each. Ten of the states are rated as “green,” meaning platooning can take place without unnecessary restrictions on operations. The other 10 are in the “yellow” category, which means some degree of platooning is allowed, but with what CEI judges to be poorly justified restrictions. The remaining 30 states have no meaningful provisions for platooning.