The Department of Transportation shall keep in its files an official, signed record of every line that is ascertained, fixed, or marked on the ground, in exercise of the power and authority granted by this subtitle. City Code, 1879, art. 47, §73(last cl.) 1893, art. 48, §74(last cl.) 1927, art. 45, §135(last cl.) 1950, art. 35, §62(3rd sen.) 1966, art. 26, §50(3rd sen.) 1976/83, art. 26, §54(3rd sen.) Ord. 1863-006 Ord. 50-1392 Ord. 76-139 Ord. 15-435