Only authorized emergency vehicles, including law enforcement, fire, state department of corrections, and emergency medical services vehicles, state department of transportation vehicles engaged in construction or maintenance activities, and bicycles may be equipped with a device that provides for alternate flashing of headlamps.
N.H. Rev. Stat. Ann. § 266:78-e
Other Flashing Lamps Prohibited
Source. 2008, 358:12. 2009, 168:1, eff
Official source: New Hampshire General Court. Reproduced from public-domain New Hampshire statutes; confirm against the official source for the current text. Not legal advice.