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Рост перевозок с помощью автомобильных поездов существенным образом сдерживается недостаточной их проходимостью и невозможностью широко использовать в районах с малой сетью усовершенствованных дорог. Существует большое количество способов для повышения эффективности использования автопоездов в тяжёлых дорожных условиях. Однако, наиболее эффективным методом является передача крутящего момента тягача колесам прицепа, которые в этом случае становятся ведущими. Автором были рассмотрены вопросы повышения проходимости автопоездов, а также был спроектирован механический привод на полуприцеп., The growth of transportation by road trains is significantly constrained by their low off-road opportunities and enables to use in areas with a small network of improved roads. There are a lot of ways to improve efficient using road trains in difficult road conditions. However, the most efficient way is transfer torque from truck to trailer wheels which will active in this situation. Author considered the issues of improve off-road opportunities road trains and also constructed a mechanical active drive of the trailer wheels.

This report provides a review of the literature as a lead activity within the project Assessing the Impacts of Multi-Combination Vehicles on Traffic Operations and Safety. New vehicle combinations are continuously being introduced in an effort to develop new freight efficient vehicle combinations to reduce overall unit freight costs. The number and type of multi-combination vehicles (MCVs) requesting access is increasing in Queensland and other Australian states therefore placing considerable pressure on transport regulators to expand networks available to them. Regulatory decisions about MCVs need to be informed and it is essential that routes for the operation of these vehicles be selected so as to minimise risks to the environment, road assets and other road uses, whilst still facilitating efficient freight movement.

This report provides a review of the literature as a lead activity within the project Assessing the Impacts of Multi-Combination Vehicles on Traffic Operations and Safety. New vehicle combinations are continuously being introduced in an effort to develop new freight efficient vehicle combinations to reduce overall unit freight costs. The number and type of multi-combination vehicles (MCVs) requesting access is increasing in Queensland and other Australian states therefore placing considerable pressure on transport regulators to expand networks available to them. Regulatory decisions about MCVs need to be informed and it is essential that routes for the operation of these vehicles be selected so as to minimise risks to the environment, road assets and other road uses, whilst still facilitating efficient freight movement.

© 2018, Pleiades Publishing, Ltd. On horizontal nondeformable ground, we consider the movement of a road train consisting of a biaxial tractor car and triaxial semitrailer treated as solid bodies. Based on the Lagrange’s equations of the second kind, we develop a nonlinear mathematical model of its plane motion, using the position of the fifth-wheel coupling and rotating angles of the tractor and semitrailer body as generalized coordinates. We analyze and linearize the constructed system of equations and obtain a linear mathematical model describing the small lateral displacements and rotations of the elements of a road train when it is moving at a high longitudinal speed, small jackknifing angle, and small rotation angle of the steering wheels. Using the equivalent transformations of the obtained system of equations, we construct a state-space linear model of the lateral motion of the road train. A comparative analysis of the use of linear and nonlinear models to describe the road train’s motion, carrying out standard maneuvers, is performed. It is shown that, if the restrictions are satisfied, then the results of nonlinear and linear model usage are quite close to each other and sufficiently well agree with the results of the field tests. The developed model, unlike the already known ones, is fairly simple (linear). Further, it could be used for an analytical synthesis of the control laws for the lateral component of the motion of road trains.