A height adjustable column for a shipping container building structure. The gate includes a pivotally mounted plate that abuts the lower portion of the rim of the drum mouth and is biased against it so as to maintain the abutment during rotation, shifting and flexing of the drum. The true controller also controls the vehicle device via a respective counteracting command on the data communications bus based upon detecting a rogue controller attempt to control the at least one vehicle device via a rogue command on the data communications bus. A detector instrument records the measurement light beam after deviation by the beam deviating element. The drive member and the driven member of the coupling device are each spring-loaded into a rest position and can be coupled via a locking mechanism, which by means of an electromechanical transducer can be switched between a disengaged position and an engaged position.