The authors propose new schemes of steering mechanisms of tracked vehicles made ​​on the basis of units and components of automobiles. The mathematical model of the steady turning of tracked vehicles with such steering mechanisms are developed as well as methods for calculating kinematic parameters, power and energy loading of the elements in the scheme taking into account the power losses in the transmission and suspension. The accuracy of the mathematical models is confirmed by the results of field tests of a tracked crawler "Vegus" with the proposed schemes of steering mechanisms.