RSA 265:121: Driving Motorcycles on Roadways Laned for Traffic.

I. All motorcycles are entitled to the full use of a lane and no motor vehicle shall be driven in such a manner as to deprive any motorcycle of the full use of a lane; provided, however, that 2 motorcycles may ride abreast in a single lane.

II. The driver of a motorcycle shall not overtake and pass in the same lane occupied by the vehicle being overtaken.

III. No person shall drive a motorcycle on a roadway between lanes of traffic or between adjacent lines or rows of vehicles.

IV. Motorcycles shall not be driven more than 2 abreast in a single lane.

V. Paragraphs II and III shall not apply to police officers in the performance of their official duties.

VI. No person riding upon a motorcycle shall attach himself or the motorcycle to any other vehicle, except a sidecar, on the roadway.