Various systems and models generally referred to as Pavement Management Systems (PMS) are being developed to ensure effective management of road network. PMS presented in this article – „Road Network Management System” (RNMS) – is one of the systems. However, it includes a number of original solutions and algorithms to make the standard systems more accurate. Primarily, by application of the analytic – experimental design method and experimental Two-point Bending Test. The test was used for definition of local physico-mechanical pavement material properties and fatigue coefficient formulae. A two new algorithm are introduced, one for selection of repair methods; second, for Life Cycle Cost Analysis (LCCA) based on pavement performance models ascertained on a Circular Test Track (CTT) facility. Finally, an original optimization model is presented for the calculation of time at which a repair action achieves the most benefits.