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In recent years the cargo carriage volume has ramped up dramatically, the structure of the traffic flow has changed, the number of vehicles with a loading capacity over 7 tons has increased thus causing the increase in the actual axle load on road pavement. Modern regulations regarding the calculation of flexible pavement fall behind modern requirements to road pavement and a new structure of the traffic flow, which causes the need to improve the calculation of pavement design and to change the loading design values taking into account real operating conditions. The paper provides the calculation results for two options of road pavement design: following the existing regulations and taking into account the reasonable proposed loading design values (based on different constructive schemes of vehicles, different axle load, and increased tire pressure). Keywords—traffic flow, axle loads, loading design values, road pavement.

Influence of traffic flow structure and its characteristics on calculation of pavement design