Design of effluent storage tanks in Arctic conditions (Tyumen, Tomsk)

Abstract

   The street and road network of large cities designed for 180–200 cars per 1000 people, does not meet modern requirements of convenience and safety of traffic flows and pedestrians. This problem is especially urgent for the local street-road network, since accidents occur at unregulated intersections.   Purpose: The aim of the paper is to improve the traffic efficiency at unsignalized intersections of the local street-road network with the use of modern traffic calming methods.   Methodology/approach: Statistical processing of the data on traffic accidents in Tomsk for the last 6 years. Brief description of mini-ring intersections in the world practice.   Research findings: Statistical processing of data on traffic accidents in Tomsk shows that the greatest number of accidents with severe consequences is characteristic to the regions with historical buildings, large number of streets with significant tortuosity and limited visibility at unsignalized intersections. Traffic safety at unsignalized intersections can be addressed at no significant cost by using traffic calming techniques that are widely used around the world. Traffic calming measures reduce traffic speeds both at unsignalized intersections and cross-walks, schools and child care facilities. The effect of the method is achieved by visually and physically discouraging high speed driving at the required locations. In order to reduce the accident rate directly at intersections, the traffic pattern must be changed at the intersection, in particular, the diameter of mini-rings must be not over 4 m. The foreign experience in implementing mini-ring intersections convincingly proves their high efficiency as a means of improving traffic safety.   Value: Calculation models for the capacity of unregulated intersections and mini-rings are analyzed. Recommendations are given to the application of traffic calming methods and miniring intersections in Tomsk.