The NHRA style canopy is another term for “cantilevered” or “suspended”.
The canopy is supported entirely by the trailer with no vertical poles. These are very popular with drag race teams since they allow access for tall & long dragsters. They are also popular with boat racers and vendors.
The outer eave is typically higher (96″) than a standard canopy (86″) and the projection is restricted to a maximum of 15 feet.