Abstract: An operation control system for a small-sized vehicle is capable of reducing an electric power consumption of a battery used for a power steering apparatus. The operation control system includes a main switch configured to turn on/off an engine, and a power switch function configured to turn on/off an electric motor-driven power steering apparatus supplying an assisting steering force to a steering shaft.

Abstract: A small-sized vehicle is capable of inhibiting the temperature of a battery that supplies an electric motor of a power steering apparatus with a power source from increasing. A battery which supplies the electric motor of the power steering apparatus with the power source is arranged so as not to directly receive cooling air that passes through a radiator.

Abstract: A small-sized vehicle is capable of inhibiting the temperature of a battery that supplies an electric motor of a power steering apparatus with a power source from increasing. A battery which supplies the electric motor of the power steering apparatus with the power source is arranged so as not to directly receive cooling air that passes through a radiator.

Abstract: A small-sized vehicle achieves improved cooling performance for an electric motor of a power steering apparatus. The small-sized vehicle includes a power steering apparatus, a steering force transmission mechanism, and an engine output transmission mechanism that are mounted in this order from top to bottom, and the electric motor of the power steering apparatus is arranged such that a motor axis thereof extends along a planar surface that is substantially perpendicular to a steering shaft and the electric motor is located in a range from the left oblique rear position to the right oblique rear position of the steering shaft so as to be disposed in front of the steering shaft.

Abstract: An operation control system for a small-sized vehicle is capable of reducing an electric power consumption of a battery used for a power steering apparatus. The operation control system includes a main switch configured to turn on/off an engine, and a power switch function configured to turn on/off an electric motor-driven power steering apparatus supplying an assisting steering force to a steering shaft.

Abstract: A number of embodiments of electric power assisted bicycles including a battery case arrangement that is comprised of inner and outer cases with the inner case receiving the batteries. In this way, the batteries are protected from the elements and yet can be conveniently and easily detached and carried to a remote location for charging.