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The paper contains an analysis of micro- and macro-models of movement of a traffic stream. The best model adequately reflecting specificity of traffic movement in a road stream has been established on the basis of the executed analysis. A disintegration process modeling of coordinated automotive pack has been developed for coordination purpose when vehicles are moving along a highway. Results of experimental and theoretical investigations have been cited in the paper. Directions of further research activity on the account of specific conditions influencing on a pack disintegration have been determined in the paper.

The problem intending to ensure traffic safety in the zone of a railway crossing is considered in the paper. The paper contains analysis of accidents and technical solutions how to equip railway crossings with the facilities which are designed for organization of traffic and pedestrian safety in the Republic of Belarus. As a result of investigations recommendations are given how to increase railway traffic efficiency in such zones when trains are moving fast. In order to improve crossing designations at street-road network it is proposed to use a light signal working in the mode of yellow blinking when it is allowed to pass a crossing and make road marking of special configuration at the crossing approach. There are also other recommendations on modernization of technical facilities with the purpose to improve safety. At non-intensive railway crossings located beyond urban boundaries and settlements it is suggested to switch-on outdoor lighting at the moment when a train is reaching an approach zone.

The paper gives an analysis of existing approaches to the development of mathematical models concerning departure of transport facilities and their movement along street section. Non-linear model of the given process and methodology for account of intensity pulse have been developed.

An analysis of automated control traffic systems in the Republic of Belarus is presented in the paper. As a result of the analysis a classification of existing and designed systems is given in the paper. The paper contains a list of technical means required for systems of a various level and perspective tracks concerning further development of systems are determined in the paper.