Twain Harte sits along Highway 108, a Caltrans-maintained mountain corridor with narrow shoulders. State and Tuolumne County rules govern bicycle, pedestrian, and equestrian use of shoulders and side trails.
Highway 108 through Twain Harte has limited dedicated bike infrastructure. Caltrans permits cyclists on Highway 108 outside posted prohibitions, but shoulders are narrow and frequently degraded. California Vehicle Code 21202 requires cyclists to ride as far right as practicable. Tuolumne County's Active Transportation Plan calls for future Class II bike lanes through the village core, but funding remains pending. The Twain Harte Trail and various forest service trails offer off-highway alternatives. Equestrian use on shoulders is allowed but discouraged due to traffic speeds and limited sightlines on curves.
California Vehicle Code citations from CHP for unsafe lane use; trespass charges for unauthorized use of private trails or fenced rights-of-way.
See how Twain Harte's bike lane rules rules stack up against other locations.
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