Intersections at different levels- A n alternative solution to the development of the road network

Abstract

Modern road network should provide conditions for safe and comfortable movement, both for drivers and for pedestrians. Transport industry development specialists face such transport problem as the low capacity of the road network. Low capacity causes congestion in the road network, disruptions in the organization of normal traffic flow, traffic jams, an increase in the number of traffic accidents. One way to solve this transportation problem is to use alternative solutions when designing. These solutions include constructing the intersections at different levels. The aim of the study is to compile data on alternative diamond-shaped intersections at different levels with a change in the side of movement. The main results of the study are that at the moment there are three schemes of a diamond-shaped intersection with a change in the side of the movement. These types of intersections have a smaller number of conflict points, compared with the intersection of the diamond type. The experience in the operation of road sections with diamond intersections showed a decrease in accident rates. Cyclists and pedestrians can use the junctions as well. The results of the study give an idea of the level of design of alternative types of intersections abroad. Considered interchanges can be used not only when at crossings of high-category roads, but also in cities, in the conditions of the existing development.