RSA 265:6-a Highway Construction and Maintenance.

I. The driver of a vehicle shall yield the right-of-way to any authorized vehicle or pedestrian actually engaged in work upon the highway within any construction or maintenance area indicated by official traffic control devices.
II. The driver of a vehicle shall yield the right-of-way to any authorized vehicle obviously and actually engaged in work upon a highway whenever such vehicle displays emergency lights or amber warning lights as authorized under RSA 266:78-a through RSA 266:78-q and shall give wide berth, without endangering oncoming traffic, to highway workers and stationary or moving vehicles owned by or contracted to state or local highway maintenance departments displaying amber warning lights. Any person violating this paragraph shall be fined $150 plus penalty as