A carriage body for a rail vehicle for passenger transport for use in short distance operation, wherein - the carriage body has at least: - two side walls, formed of a lower and an upper longitudinal beam (602, 601) each that are connected by several side wall segments and vertically arranged pillars (304, 304'), and - a roof, and - a base, and - two end walls or one end wall and one head module, - the lower longitudinal beams of the two side walls are connected to the base by means of connecting elements in the longitudinal direction of the carriage body, - the upper longitudinal beams of the two side walls are connected to the roof by means of connecting elements in the longitudinal direction of the carriage body, - the lower and upper longitudinal beams (602, 601) are formed as multi-chamber hollow profiles which are continuous over the entire length of the carriage body and each have at least two chambers, - the lower and upper longitudinal beams (602, 601) are formed of fiber-reinforced plastic, - the two end walls or one end wall and one head module are connected to the upper and lower longitudinal beams (601, 602) perpendicularly to the longitudinal direction of the carriage body with a force fit and/or a form fit and/or an inter-material bond by connecting elements, - the side walls, the roof, the base and the end walls or the end wall and the head module consist at least partly of fiber-reinforced plastic composite, - the connecting elements consist at least partly of metal, and - the chambers of the lower and upper longitudinal beams (602, 601) are separated from each other by webs and are surrounded by at least one outer wall which consists of one or more plies of fiber-reinforced plastic composite. - the carriage body has at least: - two side walls, formed of a lower and an upper longitudinal beam (602, 601) each that are connected by several side wall segments and vertically arranged pillars (304, 304'), and - a roof, and - a base, and - two end walls or one end wall and one head module, - the lower longitudinal beams of the two side walls are connected to the base by means of connecting elements in the longitudinal direction of the carriage body, - the upper longitudinal beams of the two side walls are connected to the roof by means of connecting elements in the longitudinal direction of the carriage body, - the lower and upper longitudinal beams (602, 601) are formed as multi-chamber hollow profiles which are continuous over the entire length of the carriage body and each have at least two chambers, - the lower and upper longitudinal beams (602, 601) are formed of fiber-reinforced plastic, - the two end walls or one end wall and one head module are connected to the upper and lower longitudinal beams (601, 602) perpendicularly to the longitudinal direction of the carriage body with a force fit and/or a form fit and/or an inter-material bond by connecting elements, - the side walls, the roof, the base and the end walls or the end wall and the head module consist at least partly of fiber-reinforced plastic composite, - the connecting elements consist at least partly of metal, and - the chambers of the lower and upper longitudinal beams (602, 601) are separated from each other by webs and are surrounded by at least one outer wall which consists of one or more plies of fiber-reinforced plastic composite.