Environment consciousness of puclic opinion is increase recent years. In the management of the forest ecosystem for various purposes, care must be taken not to spoil the forest structure. To achieve this, forests must be used according to forestry techniques. Forest roads planning standarts (slope, width, pavement, drainage ete.) are different in production, reforestration, national park and protection forests.The need for total forest roads in Turkey is 201810 km, and that 133693 km portion of which, corresponding to 66.25%, was constructed by the end of 2004. With a view to be capable of conducting modern forestry activities, our country's forests should be provided with a systematic roads network by completing as soon as possible the construction of the remaining portion of such roads. In this article, functional planning criterion of forest road network system in Turkey is emphasized. Road spacing and road density has been studied concerning forest roads in production, reforestration, national park and protection forests in Turkey.