PURPOSE: To provide a self-propelled vehicle which can be used not only in different types of pipe systems for urban areas such as sewer pipes, water supply systems, drain pipes, brackets with indentations, pylons or the like but also in industrial environments.

CONSTITUTION: A self-propelled vehicle intended to move in a substantially circular space 1 has central load-bearing structures 8 and 8a made of frames placed in a longitudinal directions. Sets of jacks are arranged in transverse planes perpendicular to that direction and bear at their end a set of driving element. Ends of rods of the jacks have a means for propelling the vehicle toward the circular space 1.