Introduction. The implementation of the Weighing in Motion System (WIM) in Ukraine has been started in compliance with the State Targeted Economic Program for the Development of Public Highways of State Importance in 2018-2022 and was aimed at preserving the road surface from damaging and reducing expenses for road maintenance. In order to ensure transparency in the field of state planning for the road construction, reconstruction and repair, Ukravtodor ensures the publication of up-to-date WIM information via interactive map http://bit.ly/wiminbrief and annual statistical reports. The paper describes an analysis of traffic volume coefficients based on WIM data. Problems. The need for improving the method of calculating of road pavement structures (non-rigid and rigid) reliability under existing traffic loads, taking into account the WIM data on traffic volume and traffic condition. Purpose. Clarification of traffic conditions and traffic loads on road pavement. Materials and method. Mathematical modelling using survey data. Results. Up-to-date traffic volume coefficients. Conclusions. The implementation of WIM System and WIM sites network expansion is a progressive way for traffic volume and traffic load monitoring and reducing destructive impact of overloaded vehicles on road pavement. WIM data is suitable for traffic load modelling loads and road pavement designing.

The work presents a study of the destructive impact of modern overloaded vehicles on the construction of non-rigid road clothing. According to the results of the analysis, the dependence of the influence of overloaded vehicles (according to the manufacturer's plant) on the change in the parameters of non-rigid road clothing (thickness of the layer of asphalt concrete layers, general modulus of elasticity, service life) was established.

Whitetopping overlay is a concrete overlay on the prepared existing hot mix asphalt (HMA) pavement to improve both the structural and functional capability. It's a relatively new rehabilitation technology for deteriorated HMA. If the slab thickness is less or equal to 4 in., it is referred to as ultra-thin whitetopping (UTW). "WT" is used to refer to concrete overlay thicker than 4 in. In this research, the term "whitetopping" is used to refer to both WT and UTW in general. The primary objectives of this study are to catalog the whitetopping (WT) and UTW projects in Wisconsin, document pertinent design and construction elements, assess performance and estimate a service life of these projects. A comprehensive literature review was performed. A database of the WT and UTW projects was established covering 18 projects built from 1995 to 2007 in Wisconsin. The performance of these WT and UWT projects were assessed, by mean of shear strength tests on field cores, falling weight deflectometer (FWD) tests on selected projects, and field distress survey on in-service projects. FWD backcalculation methods for WT and UTW pavements were studied and a Critical Distance Method was proposed and utilized for UTW pavement. Fatigue life was analyzed using 18kip, 22kip and 26kip single axle load level. Performance assessment was conducted using both Pavement Condition Index (PCI) and Pavement Distress Index (PDI). The performance of whitetopping projects in Wisconsin was found comparable to that in other states. Whitetopping overlay thickness, joint spacing and pavement age were found to have significant effects on pavement performance.

The paper clarifies the terms related to the inspection and monitoring of airfield pavements for major repairs and reconstruction and their restoration.The paper presents an improved methodology for assessing the condition of the pavement, establishing the residual life and assignment of repairs to the new visual and instrumental inspection. establishing the need and procedure for monitoring and diagnostics of artificial airfield pavements to create a database of the airfield pavement management system.

The paper specifies the terms related to the types of work on major repairs and reconstruction of airfield pavements and their restoration. An improved methodology for assessing the condition of the pavement, establishing the residual life and assigning the types of repairs to the new visual and instrumental inspection is given.