CODE OF VIRGINIA BACK-POLING (§ 45.1-161.146) Back-poling shall be prohibited except (i) at places where the trolley pole cannot be reversed or (ii) when going up extremely steep grades. In all circumstances, back-poling shall occur only at very slow speed. HISTORY: Code 1950, § 45-69.1; 1954, c. 191; 1966, c. 594, § 45.1-73; 1979, c. 315; 1983, c. 70; 1985, c. 302; 1994, c. 28.