STREET JIB CRANES - Wall Travelling Jib Cranes Street single girder wall travelling jib cranes open up the possibility of ultra flexible handling systems. This uniquely designed crane travels along the workshop on it's own tracks which are supported from the building structure. The design allows one crane to service a number of workstations and to transport materials over the entire length of a factory. Wall travellers are ideal as second level cranes working under top level overhead cranes. They can be installed such that loads and cranes may pass each other smoothly without interruption and without the need for supporting steelwork or crane legs in the centre of the workshop.