Headway speed" means "headway speed" as defined in RSA 270-D:1, VI.
N.H. Admin. Code § Saf-C 401.08
#4214, eff 1-22-87; ss by #4562, eff 1-3-89; ss by #5936, INTERIM, eff 1-3-95, EXPIRES, 5-3-95; ss by #6005, eff 3-24-95, EXPIRED: 3-24-03
New.#7904, INTERIM, eff 6-24-03, EXPIRED: 12-21-03
New. #8172, eff 9-21-04 (from Saf-C 401.06 ); ss by #10293, eff 3-20-13