The commissioner is authorized to adopt regulations either prohibiting the operation of motorized bicycles on any public road or highway with a speed limit in excess of 40 miles per hour, which in [his] the commissioner’s discretion are hazardous for the operation of motorized bicycles […] In no case, however, shall the commissioner adopt a regulation permitting motorized bicycles to be operated on any highway with a posted speed in excess of 50 miles per hour.

Although “Freeway” as defined in the bill encompasses much more than typically used in common speech.