||06-08-2012 07:55 PM
NH: "No person shall drive upon any way any closed motor vehicle, or motor vehicle so constructed, equipped, or loaded that the driver is prevented from having a constantly free and unobstructed view of the way immediately in the rear, unless there is attached to the vehicle a mirror or reflector so placed and adjusted as to afford the driver a clear, reflected view of the way in the rear of the vehicle."
In kansas we need an in-cab rear view mirror and one on the drivers side. Passenger side is optional. NH's law seems a little...open to interpretation:)