A rocking vehicle comprising: an upper arm that is rockably supported by a body frame; a lower arm that is disposed below the upper arm and rockably supported by the body frame; side members (34, 34) to which left and right end portions (62, 63) of the upper arm and left and right end portions (52, 52) of the lower arm are turnably coupled; a rocker mechanism that is configured from a rocker arm and the side members (34, 34), the rocker arm being composed of the upper arm and the lower arm; and wheels (12L, 12R) that are supported below the side members (34, 34), wherein: a rocking center of the upper arm is disposed above a straight line connecting left and right pivots (47, 47) of the upper arm, the pivots (47, 47) of the upper arm coupling the left and right end portions (63, 62) of the upper arm to the side members (34, 34); and a rocking center of the lower arm is disposed above a straight line connecting left and right pivots (48, 48) of the lower arm, the pivots (48, 48) of the lower arm coupling the left and right end portions (52, 52) of the lower arm to the side members (34, 34), the rocking vehicle further comprising a roll damper of the rocker mechanism having upper and lower supporting points (72, 71) wherein with the rocking vehicle in the upright position the upper supporting point of the roll damper is disposed above the left and right pivots (47, 47) of the upper arm, and the lower supporting point of the roll damper is disposed below the rocking center of the lower arm and above the left and right pivots (48, 48) of the lower arm, characterized in that with the rocking vehicle in the upright position the upper and lower supporting points (72, 71) of the roll damper are arranged along the vehicle-body center and the upper supporting point of the roll damper is disposed below the rocking center of the upper arm. an upper arm that is rockably supported by a body frame; a lower arm that is disposed below the upper arm and rockably supported by the body frame; side members (34, 34) to which left and right end portions (62, 63) of the upper arm and left and right end portions (52, 52) of the lower arm are turnably coupled; a rocker mechanism that is configured from a rocker arm and the side members (34, 34), the rocker arm being composed of the upper arm and the lower arm; and wheels (12L, 12R) that are supported below the side members (34, 34), wherein: a rocking center of the upper arm is disposed above a straight line connecting left and right pivots (47, 47) of the upper arm, the pivots (47, 47) of the upper arm coupling the left and right end portions (63, 62) of the upper arm to the side members (34, 34); and a rocking center of the lower arm is disposed above a straight line connecting left and right pivots (48, 48) of the lower arm, the pivots (48, 48) of the lower arm coupling the left and right end portions (52, 52) of the lower arm to the side members (34, 34), the rocking vehicle further comprising a roll damper of the rocker mechanism having upper and lower supporting points (72, 71) wherein with the rocking vehicle in the upright position the upper supporting point of the roll damper is disposed above the left and right pivots (47, 47) of the upper arm, and the lower supporting point of the roll damper is disposed below the rocking center of the lower arm and above the left and right pivots (48, 48) of the lower arm, characterized in that with the rocking vehicle in the upright position the upper and lower supporting points (72, 71) of the roll damper are arranged along the vehicle-body center and the upper supporting point of the roll damper is disposed below the rocking center of the upper arm.