Abstract:
The analysis of relief changes and track structures (pedestrian crossings, stops, intersections) of 64 public transport routes of Yerevan city, served by Gazelle minibuses has been carried out. Since a significant part of minibuses have exhausted their service life or are close to its end, the clarification of the maintenance, operation and repair schedules that ensure the normal operation of minibuses presuppose a detailed study of the track features of the routes, of which the most characteristic (5 pcs.) have been selected. Their routes are divided into sectors with different terrain and track structure, their length, geodesic heights and differences in the end points of the sectors, as well as their angles of inclination to the horizon. Mathematical models of the selected 5 routes are compiled in the form of multi-parameter functions, which are replaced by systems of two-dimensional parametric equations for use in practical calculations. To identify the regression equations of these functions, statistical standard computer programs were used and power equations of the 1st – 6th orders were obtained. The optimal variants of equations of the 1st–4th order are selected from these equations, for which the condition $R^{2} $≥$ 0,9of the coefficient of determination is provided. When the value $R^{2}$ =0,5--0,7, it is proposed to switch to the method of one-dimensional statistical calculations, checking the compliance of data samples with the normal distribution law and, if it is satisfied, using quantile data values at P = $0.95
