RSVD R8 is a device capable of moving underneath the rolling stock subjected to technical verification, without the need to position it in specially equipped areas (the rolling stock shall simply be placed on the tracks, in any area). The device allows to carry out measurements and acquire images of the critical components and parts positioned under the body and on the sides: RSVD system allows to carry out, on the basis of these images, accurate and highly reliable measurements for the checks of correct assembly, levels of wear and integrity which constitute The essential data for the Periodical Verifications. The images acquired by RSVD and the measurements made are automatically recorded and made available (remotely) to the managers in charge of making the appropriate assessments. RSVD allows a considerable reduction of time and costs necessary for carrying out the checks, eliminating the need for equipped areas, carrying out complex surveys and measurements automatically and with high precision and reliability in conditions that are often not easy for a human operator, allowing the automatic registration of the surveys carried out.