Traffic network patterns affect also their throughput capacity. Various traffic network patterns influence the selection of travelling routes from origin to destination. The selection of travelling done by different traffic participants is often such that vehicle trajectories, including vehicle flows can conflict. If the shape of traffic network can result or results in unnecessary conflicting, then that pattern of traffic network is not adequate. Especially inadequate are the traffic network patterns which cause excessive conflicts of intensive traffic flows. Excessive conflicting will be considered on examples of various traffic networks. Traffic networks will also be presented in which the possibility of unnecessary conflicting of traffic flows has been eliminated. There are many networks with several alternative connections between the origin and the destination, and that can cause unnecessary conflicts of vehicle flows. Here, there may generally be numerous traffic network patterns. The town-planning literature most often mentions orthogonal traffic networks, radial - ring traffic networks and organic traffic networks. Traffic networks can be composed also of different geometrical figures: triangular traffic networks, networks composed of regular hexagon and networks composed of regular octagons and quadrilaterals. Traffic networks where the possibility of unnecessary conflicting of traffic flows has been eliminated, are those of the branch pattern. In practice, the most usual are traffic networks of complex patterns composed of many different elements, and they can be with one-directional network elements only (connections between nodes), with two-directional elements only or, the most usual case and with two-directions and one-directional elements.
Abstract