Three quarter rear view of Dassault Mirage F1 N° 02 (4)

If the Mirage could no be missed in the picture, I remember the continuous ballet of the three-wheeled motorcycle carrying either a seated man, parts of aircraft, tools and, at stop, being used as a step !!! Interesting also, the four metal corners at wing and tailplane tips used as caution mark with their orange fabric tapes. You never see this on operational aircraft... Is it to avoid collisions or a warning for absent-minded pilots ready to start with an unprepared aircraft...???