The agency shall mark all paved class 1 and 2 highways with painted center lines. The selectboard promptly shall notify the district transportation administrator when these markings have been obliterated by resurfacing. (Added 1985, No. 269 (Adj. Sess.), § 1; amended 1991, No. 175 (Adj. Sess.), § 11, eff. July 1, 1993; 1993, No. 25, § 61a, eff. May 18, 1993; 1995, No. 60, § 22, eff. April 25, 1995.)