The concept of accuracy of road maps in Ukraine: economic aspect

The article focuses on further consideration of approaches to improving the accuracy of road maps in terms of their geodetic and economic dimensions. So far, despite the definition of geometric positional accuracy parameters and the description of methods for collecting primary data by laser scanning and GNSS surveying, we have not yet paid due attention to a comprehensive assessment of the economic consequences of mapping errors. The relevance of research on the accuracy of transport route modelling requires the latest methods of mathematical modelling of errors - from calculating the root mean square error (RMSE) for routes to comparing different sources of spatial information. Therefore, the purpose of this article is to present methodological foundations and recommendations for creating and improving the geodetic, mathematical and information base of road maps, as well as to highlight the economic benefits and results of transport logistics optimisation. In accordance with the experience of previous developments, a thesis description of the algorithm for assessing losses and damages from inaccurate maps based on the relative deviation of route lengths and the indicators of the ICS is proposed. The influence of geometric distortions in cartographic materials and their correction by using laser scanning data is considered in detail. Examples of successful practices are given where more accurate maps have reduced losses and damages. The importance of introducing recommendations for map modelling and using corrected methods of reproducing the road network in a single database is emphasised. This approach is in line with the postulate of the need for systematic updating of cartographic data, which allows formalising and quantifying the attribute characteristics of road transport routes in the national network.