The commissioner of transportation shall adopt rules, under RSA 541-A, relative to:
RSA 21-L:12
1985, 402:1. 1986, 136:3. 1988, 288:28, I, II. 1989, 9:2; 147:2, I-III. 1990, 229:15. 1996, 227:4, I-X, XII. 1997, 290:2-4. 2000, 105:8. 2002, 6 : 4 , I-VII. 2003, 88 : 1 , II, III. 2005, 212 : 3 ; 291:14. 2007, 87 : 2 . 2010, 80 : 2 , eff. May 19, 2010.