The commissioner may conduct traffic survey interviews, truck weight surveys and such other statistical studies as he deems necessary on class I, II, III, IV and V highways for the department's use in the planning and development of the state-wide highway system.
RSA 228:23
RSA 229:6-b. 1971, 96:1. 1981, 87:1. 1992, 150:1, eff. July 5, 1992.