Abstract
This paper describes the construction process of a discrete model of a heavy truck running speed. The running speed calculation is based on the technical parameters of the road (geometry, gradient, curves, etc.) and valid Czech legislation for road designing. In this article, road factors influencing the final heavy freight vehicle's running speed are presented as well. The main assumption is the fact that every heavy vehicle moves on the road by speed allowed by the geometry of this road, road signs and traffic flow characteristics (intensity, density or road capacity).
Highlights
A heavy freight vehicle is the most limiting factor in road traffic planning and when designing roads
The main assumption is the fact that every heavy vehicle moves on the road by speed allowed by the geometry of this road, road signs and traffic flow characteristics
If we want to determine the current speed of this vehicle at each point(s) of the road, we must take into account, in addition to the valid Czech legislation, its own road geometry and traffic constraints on the road
Summary
A heavy freight vehicle (truck) is the most limiting factor in road traffic planning and when designing roads. The text of the paper is based mainly on the thesis entitled "Determination of alternative routes of main roads in the event of extraordinary and planned traffic constraints", where the whole issue is described in more detail and the outcome of which is the analytical model for valuation of diversion traffic routes according to their impedance [1]. This discrete model uses, in addition to the driving dynamics of a selected type of vehicle, the road geometry parameters (directional ratios, curve radius, width arrangement, etc.) and maximum permitted speed on the road section supplemented by other decision criteria
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