605 ILCS 5/2-103

The township and district road system includes all rural roads to which this Code applies under Section 1-103 and which are not a part of the State highway system, county highway system or municipal street system, and includes any access road constructed under Section 10-22.36A of The School Code which connects school grounds with such a rural road. The township and district road system also includes such nondedicated subdivision roads as have been maintained or improved, under Section 6-701.8, with motor fuel tax funds allocated for use in road districts.