The article focuses on the issue of traffic service for rural settlements and related production, tourist and recreation activities in rural areas in the conditions of the Czech Republic by means of rural tertiary roads. The article declares their critical importance for assurance of traffic service and penetrability of the Czech rural areas. Theoretical grounds have been specified for their designing, as well as basic criteria and parameters. A selected territorial segment is used to demonstrate a system approach to this issue and traffic flows are classified in terms of the type, direction and intensity. In conclusion, the article summarizes benefits of the solution defined by the described method.