The quality of the road depends on the terrain and environmental consideration; basically the susceptibility to wash away and erosion is critical to the actual quality of specification to the road construction.
 
Enters the Maintenance Trolley. It is a self propelled trolley that fits onto the triangular gantry, which allows for basic scheduled maintenance of the conveyor system.
 
The trolley is independently powered usually by its own onboard diesel engine drive and allows quick access without fatigue.
 
Substantial savings in structural costs result in adopting the triangular gantry design with the added efficiency of maintenance personnel.