An emergency vehicle, in particular fire fighting vehicle, which emergency vehicle is designed as a truck, the emergency vehicle having a front side and a rear side spaced therefrom in the longitudinal direction of the vehicle and comprising: - a vehicle body with an floor assembly, a roof assembly and with a left longitudinal wall and a right longitudinal wall, wherein the longitudinal walls (11, 12) are arranged between the floor assembly and the roof assembly; - a central longitudinal beam, which longitudinal beam is arranged in a manner extending in vehicle longitudinal direction, wherein - the floor assembly comprises a floor structure and the floor structure is securely joined directly to the central longitudinal beam, and wherein - the central longitudinal beam forms an integral component of the floor assembly of the vehicle body, - at least one front-wheel pair and at least one rear-wheel pair, wherein the at least two wheel pairs (3, 4) are held on the central longitudinal beam; characterized in - that the floor assembly forms a bottom chord, especially a tension belt, of the vehicle body, - that the roof assembly forms an upper chord, in particular a pressure belt, of the vehicle body, - that the vehicle body comprises multiple transverse walls, - that at least individual ones of the transverse walls are securely joined directly to the central longitudinal beam of the floor assembly, - that at least individual ones of the transverse walls are securely joined to at least one of the longitudinal walls (11, 12) of the vehicle body, - that the vehicle body comprises a driver's cabin, which driver's cabin forms an integral structural unit of the vehicle body, - that the central longitudinal beam is securely joined directly to the vehicle body, and - that the vehicle body together with the longitudinal beam integrated therein forms a structural, continuously cohesive unit from the front side to the rear side. - a vehicle body with an floor assembly, a roof assembly and with a left longitudinal wall and a right longitudinal wall, wherein the longitudinal walls (11, 12) are arranged between the floor assembly and the roof assembly; - a central longitudinal beam, which longitudinal beam is arranged in a manner extending in vehicle longitudinal direction, wherein - the floor assembly comprises a floor structure and the floor structure is securely joined directly to the central longitudinal beam, and - the central longitudinal beam forms an integral component of the floor assembly of the vehicle body, - at least one front-wheel pair and at least one rear-wheel pair, wherein the at least two wheel pairs (3, 4) are held on the central longitudinal beam; - that the floor assembly forms a bottom chord, especially a tension belt, of the vehicle body, - that the roof assembly forms an upper chord, in particular a pressure belt, of the vehicle body, - that the vehicle body comprises multiple transverse walls, - that at least individual ones of the transverse walls are securely joined directly to the central longitudinal beam of the floor assembly, - that at least individual ones of the transverse walls are securely joined to at least one of the longitudinal walls (11, 12) of the vehicle body, - that the vehicle body comprises a driver's cabin, which driver's cabin forms an integral structural unit of the vehicle body, - that the central longitudinal beam is securely joined directly to the vehicle body, and - that the vehicle body together with the longitudinal beam integrated therein forms a structural, continuously cohesive unit from the front side to the rear side.