d85b2f49_Segway_laws__New_Hampshire_bicycle_law
[New Hampshire EPAMD law] a system that when employed will enable the operator to bring the device to a controlled stop; [Comments] The Segway law requires a brake, but unlike the bicycle law, sets no standard for its performance. [New Hampshire bicycle law] 
266:88 Brake Required.  Every bicycle and moped shall be equipped with a brake or brakes which will enable its driver to stop the bicycle or moped within 25 feet from a speed of 10 miles per hour on dry, level, clean pavement.
Segway laws
New Hampshire bicycle law