"Manufacturing of the three-wheeler was banned in 1988, and when the decrees expired in 1998, manufacturers agreed to an ATV Action Plan in which they agreed not to market or sell three-wheeled ATV’s"
"Nevertheless, on April 28, 1988, the U.S. ATV distributors entered into an unprecedented 10-year agreement with the CPSC called the Final Consent Decree. Under the agreement, the ATV industry made a $100 million commitment to expand existing safety programs. Among the many components of this agreement, free training and training incentives were offered to owners and purchasers of new ATVs. Additionally, distributors would no longer market three-wheeled ATVs, repurchasing any unsold three-wheel models from dealer inventory."
There was never a ban on the sale, purchase, or use of 3-wheeled ATV's.
There was however a ban on the manufacturing of new models, and dealers agreed not to pursue the sale of existing 3-wheeled ATV's to customers.