Abstract: A wheeled vehicle includes a front driven shaft mounted to and rotatable relative to a front frame portion, a front wheel body mounted to rotate with the front driven shaft, a rear driving shaft mounted to and rotatable relative to a rear frame portion and having an upper driving end to be operated manually, and a force transmitting mechanism including front and rear rotary members which are respectively coupled to the front driven and rear driving shafts, and a transmitting member connected to the front and rear rotary members so as to transmit rotational movement of the rear rotary member, which is initiated manually by the rear driving shaft, to drive the front rotary member and the front driven shaft to rotate, thereby resulting in a swiveling movement of the front wheel body.