The possibilities of minimum expence forest road construction and maintenance, and transportation works, as well as environmentlly sound planning of these roads must be investigated in order to keep up with the forestry applications, because the size of pertaining industry is so complex that the immensity and expences of preparation works are risen. Many studies have been undertaken in order to keep transportation and road construction and maintenance expences at reasonable levels. CTI (Central Tire Inflation) is one of them, developed during World War II for military purposes and. very well suited to numerous aspects of the civil transportation today. When applied to the transportation in the forestry applications, it is proven to be very cost effective in both road maintenance and transportation expences. In the scope of these paper, a general introduction to CTI to reduce the road construction, maintenance and transportation period, to decrease the amount of sediment from road surface and to increase the life of the truck tires, was given.