To provide a model vehicle carriage with an automatic power source switching device which can form a stable energizing circuit in spite of the presence of vibrations and rockings due to traveling of a vehicle and can prevent a very heavy load on the rotating force of the wheel at the time of automatically switching a power source by a switching stay rocking by the rotation of the wheel.

The model vehicle carriage 1 includes a switching stay rockably supported in the front/rear directions of its traveling, a conductor 18 supported by this stay 17 and movable in the front/rear direction of the traveling according to the rocking of the stay 17 and conductive contact point boards 14 to 16 arranged at either one or both of the both side parts of the conductor along the moving direction of the conductor 18 to be in slidable contact with the side end of the conductor. At least one side part of the conductor 18, the plural boards 15 and 16 for switching a circuit are arranged at a certain gap.