A two-wheeled vehicle which includes a two-wheeled vehicle body, a front wheel and a rear wheel respectively rotatably installed at a front and a rear of the two-wheeled vehicle body, and a steering system steering the front wheel is disclosed. The two-wheeled vehicle includes auxiliary wheels connected to the front wheel on both sides of the two-wheeled vehicle body and steered together with the front wheel by the steering system, lifting devices configured to adjust distances of the auxiliary wheels from the ground, and gap adjusting devices configured to adjust lateral gaps of the auxiliary wheels from the two-wheeled vehicle body. The auxiliary wheels are spaced apart from the ground while traveling straight. And an inclination of the two-wheeled vehicle body while turning is limited as one of the auxiliary wheels comes into contact with the ground.

A two-wheeled vehicle which includes a two-wheeled vehicle body, a front wheel and a rear wheel respectively rotatably installed at a front and a rear of the two-wheeled vehicle body, and a steering system steering the front wheel is disclosed. The two-wheeled vehicle includes auxiliary wheels connected to the front wheel on both sides of the two-wheeled vehicle body and steered together with the front wheel by the steering system, lifting devices configured to adjust distances of the auxiliary wheels from the ground, and gap adjusting devices configured to adjust lateral gaps of the auxiliary wheels from the two-wheeled vehicle body. The auxiliary wheels are spaced apart from the ground while traveling straight. And an inclination of the two-wheeled vehicle body while turning is limited as one of the auxiliary wheels comes into contact with the ground.

A pulling tool for a human-powered wheeled vehicle comprising an arm member including a telescoping shaft member and a handle member; and a connecting member configured to releasably connect to a handlebar of the human-powered wheeled vehicle such that the training tool can be used to direct and control the human-powered wheeled vehicle allowing a rider to learn how to operate the human-powered wheeled vehicle, wherein the connecting member includes a shaft receiving member configured to receive the telescoping shaft member, the shaft receiving member connected to a rectangular support element configured to receive a pair of prong members.

A pulling tool for a human-powered wheeled vehicle comprising an arm member including a telescoping shaft member and a handle member; and a connecting member configured to releasably connect to a handlebar of the human-powered wheeled vehicle such that the training tool can be used to direct and control the human-powered wheeled vehicle allowing a rider to learn how to operate the human-powered wheeled vehicle, wherein the connecting member includes a shaft receiving member configured to receive the telescoping shaft member, the shaft receiving member connected to a rectangular support element configured to receive a pair of prong members.

A bicycle training system for bicycle training includes a bicycle that has a rear tire and a seat post. A yoke is provided and the yoke is removably coupled to the bicycle. The yoke may be gripped by a first user. Thus, the first user stabilizes the bicycle when a second user is learning to ride the bicycle.

A bicycle training system for bicycle training includes a bicycle that has a rear tire and a seat post. A yoke is provided and the yoke is removably coupled to the bicycle. The yoke may be gripped by a first user. Thus, the first user stabilizes the bicycle when a second user is learning to ride the bicycle.

A tricycle may be operable between a first mode of operation steerable by a tricycle rider, and a second mode of operation steerable by an individual pushing the tricycle. A rider handle, in the first mode, may be configured to be rotationally coupled with the stem in a manner permitting a tricycle rider to exert forces on the rider handle and thereby turn the fork, and the rider handle in the second mode, being configured to be rotationally uncoupled from the stem, preventing forces on the rider handle from turning the fork. At least one rotation restrictor may be included for preventing the front wheel from turning to a position where the front wheel axis leads the fork axis, and for maintaining the front wheel axis in a position trailing the fork axis both when the tricycle is propelled by a tricycle rider in the first mode and when the tricycle is pushed from behind in the second mode.

A tricycle may be operable between a first mode of operation steerable by a tricycle rider, and a second mode of operation steerable by an individual pushing the tricycle. In both such first and second modes, the frame of the tricycle is configured to rotatably support the rear wheels and configured to support the head tube at a distance from the rear wheels such that a distance between the head tube and rear wheels need not necessarily be changed even when the front wheel axis location is changed from one mode to another.

The present disclosure provides systems, methods, and devices for providing stability to a vehicle using one or more auxiliary support members on the vehicle, such as lateral sides of the vehicle. The auxiliary support members may extend away from the vehicle body to approach and/or touch a support surface and provide stability and in some cases additional centripetal force to facilitate steering of the vehicle. The auxiliary support members may also retract towards the vehicle.

The present disclosure provides systems, methods, and devices for providing stability to a vehicle using one or more auxiliary support members on the vehicle, such as lateral sides of the vehicle. The auxiliary support members may extend away from the vehicle body to approach and/or touch a support surface and provide stability and in some cases additional centripetal force to facilitate steering of the vehicle. The auxiliary support members may also retract towards the vehicle.