Chassis-measuring system, comprising at least one pair of measuring heads (32, 52; 72, 92) situated opposite one another in the transverse direction of the vehicle, wherein each measuring head has the following features: - an illumination device for generating a structured illumination (38, 58, 78, 98), which is embodied such that it generates a structure image on a measuring head (32, 52; 72, 92) situated opposite in the transverse direction of the vehicle, - a reference surface (40, 60, 80, 100) facing in the same direction as the illumination device (38, 58, 78, 98), on which reference surface a structure image generated by an illumination device (38, 58; 78, 98) of the measuring head (32, 52; 72, 92) situated opposite in the transverse direction of the vehicle can be imaged, - at least one measuring camera (34, 36; 54, 56; 74, 76; 94, 96), which faces in the same direction as the illumination device (38, 58, 78, 98) and is embodied such that, for determining the positioning parameters of the measuring head (32, 52; 72, 92), it detects the structure image on the reference surface (40, 60; 80, 100) of the measuring head (32, 52; 72, 92) situated opposite, a data processing unit, which is connected to the measuring heads (32, 52, 72, 92) and is embodied such that it determines the position parameters of the measuring heads (32, 52, 72, 92) with respect to one another from the comparison of the generated structure image on the reference surface (40, 60; 80, 100) of a measuring head (32, 52; 72, 92), which structure image was generated by the illumination device (38, 58, 78, 98) of the measuring head (32, 52; 72, 92) situated opposite and was detected by the measuring camera (34, 36; 54, 56; 74, 76; 94, 96) of the measuring head (32, 52; 72, 92) situated opposite, with stored reference images. - an illumination device for generating a structured illumination (38, 58, 78, 98), which is embodied such that it generates a structure image on a measuring head (32, 52; 72, 92) situated opposite in the transverse direction of the vehicle, - a reference surface (40, 60, 80, 100) facing in the same direction as the illumination device (38, 58, 78, 98), on which reference surface a structure image generated by an illumination device (38, 58; 78, 98) of the measuring head (32, 52; 72, 92) situated opposite in the transverse direction of the vehicle can be imaged, - at least one measuring camera (34, 36; 54, 56; 74, 76; 94, 96), which faces in the same direction as the illumination device (38, 58, 78, 98) and is embodied such that, for determining the positioning parameters of the measuring head (32, 52; 72, 92), it detects the structure image on the reference surface (40, 60; 80, 100) of the measuring head (32, 52; 72, 92) situated opposite, a data processing unit, which is connected to the measuring heads (32, 52, 72, 92) and is embodied such that it determines the position parameters of the measuring heads (32, 52, 72, 92) with respect to one another from the comparison of the generated structure image on the reference surface (40, 60; 80, 100) of a measuring head (32, 52; 72, 92), which structure image was generated by the illumination device (38, 58, 78, 98) of the measuring head (32, 52; 72, 92) situated opposite and was detected by the measuring camera (34, 36; 54, 56; 74, 76; 94, 96) of the measuring head (32, 52; 72, 92) situated opposite, with stored reference images.