Abstract

The goal of this paper is to investigate theoretically the possible directions of some specified methods for the alternative roundabouts effectiveness modeling and optimization. The out-coming criteria have an economical interpretation. Those are the objective functionals of the alternative roundabouts effectiveness as the profit gained in the course of the traffic flow changes in the view of the integral form. This is modeled taking into consideration the transport infrastructure functioning elements such as the traffic flow of a capacity model. It takes into account two major components of the transportation services which are the alternative roundabouts business’ incomes and expenses relating to the roundabouts transportation worthiness support. The prototypic approach is that one from the aircraft airworthiness support measures models. Corresponding managerial influences with respect to environmental, safety, utility, and other issues, as well as probable impacts, are modeled with the construction of the relevant under-integral expressions, equations, and appropriate coefficients and parameters of the mathematical models. The achieved theoretical results, on the basis of the Euler-Lagrange equation and accepted assumptions, have been checked for the sufficiency of the objective functional maximum presence at the “point” with the use of the conducted computer simulation. The necessary diagrams are plotted in order to illustrate the theoretical contemplations and speculations, as well as to check the correctness of the applied mathematical derivations and visualize the models’ preciseness and abilities. The theoretically constructed mathematical models have a significance of the prognostic values applicability required at the alternative roundabouts effectiveness modeling and optimization ensuring their design progress and evolutions.

Highlights

  • The complexity of the modern roundabouts design, their diversities in designations, and functional, economic, and environmental criteria structures elaboration [1] are predetermining the multialternativeness of the new types of the roundabouts evaluation.Rational economic activity is the foundation providing the development in all areas and spheres of life [2]

  • Theoretical researches with the help of the plausibly developed hypothetical mathematical models are of a great importance [2]; the usefulness of such models application for the alternative roundabouts effectiveness evaluations is beyond any doubts and it can be traced with the most upto-date publications [3,4,5,6,7,8,9,10,11,12,13,14,15]

  • The brief literature survey of the presented paper just is highlighting the principal possibilities of the proposed methods implementations in those areas of science that relate with the multiattribute assessment of road design solutions [3], geometric design of turbo roundabouts [4], or the journal paper [5] dedicated to the turbo roundabouts, design principles, and safety performance, as well as alternativeness [6] and transportation infrastructure [7] aspects

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Summary

Introduction

The complexity of the modern roundabouts design, their diversities in designations, and functional, economic, and environmental criteria structures elaboration [1] are predetermining the multialternativeness of the new types of the roundabouts evaluation.Rational economic activity is the foundation providing the development in all areas and spheres of life [2]. It is necessary to underline the importance of the developed here approach for other transportation facilities, like railway [8]; the methods are aimed at modeling alternative roundabouts effectiveness and in its sense continue the researches of the assessment, analysis, and simulation discussed in references [9,10,11,12,13,14,15]. Some of those publications emphasize the evaluation of the environmental and functional benefits of “innovative” roundabouts situational

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