I just saw this. The Forest Service, which is a whole different agency than the Park Service--Forest Service is under Dept. of Agriculture, Park Service is Dept. of the Interior, is considering changing their rules on ebikes and is soliciting comments. Here is the link. At this time, the USFS considers ebikes to be motorized and does not allow them on bicycle trails.
The United States Department of Agriculture (USDA), Forest Service, is proposing to revise its directives to update and clarify guidance on management of electric bicycle (e-bike) use on National Forest System (NFS) lands. E-bikes have become increasingly popular nationwide among outdoor...
www.federalregister.gov
Paragraph 9 shown below is confusing. Makes it seem like they're considering you can use an ebike if you can show that you are handicapped:
9. Consider emerging technologies (such as e-bikes) that are changing the way people
access and recreate on NFS lands. For example, where suitable for use, e-bikes may
provide new opportunities for individuals who might otherwise be prevented from
experiencing an NFS trail without assistance from an electrical motor.
And this section (6. g.) is confusing. Makes it seem like instead of considering allowed shared use of trails that allow bicycles but not motor vehicles, they're considering ebike only trails. How would they do that? Somewhere they need to make clear that Class 1 bikes are ok on trails that are OK for regular bicycles.
6. Use the following eight categories to identify classes of motor vehicles on an MVUM:
a. Roads Open to Highway-Legal Motor Vehicles Only. These roads are open only to motor vehicles licensed under State law for general operation on all public roads within the State.
b. Roads Open to All Motor Vehicles. These roads are open to all motor vehicles, including smaller off-highway vehicles that may not be licensed for highway use, but not OSVs or vehicles that are oversized or overweight under State traffic law.
c. Trails Open to All Motor Vehicles, Including Both Highway-Legal and Non- Highway-Legal Vehicles.
d. Trails Open to Motor Vehicles 50 Inches or Less in Width.
e. Trails Open to Wheeled Motor Vehicles 50 Inches or Less in Width.
f. Trails Open to Motorcycles Only. Sidecars are not permitted.
h. Special Vehicle Designation. This category includes any classes of vehicles that are not listed in FSM 7711.3, paragraphs 6a through 6g.
g.
Trails Open to E-Bikes Only. Specify the class or classes of e-bikes allowed
(Class 1, 2, and/or 3).