California Code, Public Resources Code - PRC § 5070.3

(a) “Affirmative access area” means an area of already existing disability access improvements along a heritage corridor.

(b) “Heritage corridor” means a regional, state, or nationwide alignment of historical, natural, or conservation education significance, with roads, state and other parks, greenways, or parallel recreational trails, intended to have guidebooks, signs, and other features to enable self-guiding tourism, and environmental conservation education along most of its length and of all or some of the facilities open to the public along its length, with an emphasis on facilities whose physical and interpretive accessibility meet “whole-access” goals.

(c) “Heritage corridors access map” means a 1:500,000 publicly distributed map combining listings and locations of parks, trails, museums, and roadside historical and natural access points, including disability and interpretive access data, along designated heritage corridors.

(d) “Plan” means the California Recreational Trails System Plan.

(e) “System” means the California Recreational Trails System.

(f) “Whole-access” means a general level of trail and human accessibility that includes not only disabled persons but all others making up the “easy-access” majority of the public.  This level of accessibility may also benefit from amplified concepts of natural terrain accessibility and cooperation with volunteer and nonprofit accessibility groups.