To provide a car end coupler for joining cars, which allows the joined cars to smoothly run on an entrance or exit part of a curved track, and which allows the joined cars to have a low floor surface in addition.

Car and couplers of two cars in front and in rear with which one end of each of the cars is supported on a joined truck, comprises a coupler for coupling car ends of the joined cars at the widthwise center of the cars, a towing rod for connecting one of the cars to the joined truck left and right links to which center parts of the left and side surfaces of the jointed truck as viewed in the advancing direction of the cars, are respectively attached so as to be rotatable, left and right rods rotatably attached at their both ends to one end of the left and right links and to one end of one of the two trained vehicles, and left and right restoring springs rotatably attached at their ends to the respective ends of the above link and to the other car ends of the cars.