... not predicate the spacing of roads. After all, the efficiency of the network would be very different although the value of the road density is similar but as the basic parameter which shows the ... designated by yellow colour in the map, transport roads of the 1st grade by red, transport roads of the 2nd grade by blue and skidding roads placed to the 3rd grade are designated by green ... width of the traffic lane is 2.5 m, minimal free width of the road is 3.5 m. Maximal longitudinal gradient of the vertical alignment depends on the morphology of terrain, on the type of subsoils,...