The use of a bicycle is prohibited—

(a) On the Savage River Loop Trail; the Savage Cabin Trail; the Triple Lakes Trail; the McKinley Bar Trail; and the Eielson Area Trails; and

(b) Within the Frontcountry Developed Area as defined by §13.970 except on park roads, road shoulders, and in public parking areas, or on trails and areas designated for bicycle use by the Superintendent. A map of the designated trails and areas open to bicycle use is available for inspection at the park visitor center and on the park Web site.