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Construction of vehicles meant for operations in extreme North regions must satisfy the possibility of their effective operations in different combinations of climatic influence and road factors typical for the said region. Taking into account the wide spectrum of change of these influence on vehicle in zones cold climates, in the paper there discussed the different aspects of operation conditions and requirements toward construction of vehicles directed to the satisfying of possibilities of their reliable and safe operations in these conditions. In condition of extreme North and North-East of USSR, where the conditions of roads, to a considerable extent, depend on the influence of climatic and atmospheric phenomena, it is necessary to consider the influence of natural-climatic factors in the system “Driver - vehicle - road - environment”.

In the North-East region of USSR number of days in a year with mean day temperature lower than minus 30°C is made up off 28-35,6 % from the total continuation of the year i.e. the mean day temperature of air during 1/3 of the year remains to lower values than at which it is possible to start the engine without using any means for making it easy to start. Serially produced heaters in the working regime of maintaining the warm condition of the engine, ensure the keeping of temperature of cooling off liquid at the level of 63-78°C. Evident that fact, that keeping of temperature at certain level is determined by the condition of effective work of heaters of cabin (saloon) (Tcool.liq=80°C) i.e. the pointed outs are advisable in case of presence of driver and passengers in the cabin, in other cases the stated level of maintaining temperature of cooling off liquid may be sufficiently reduced.