The tunnel wheeled hydraulic Power transportation unit (PTU as brief) used in the coal mine tunnel is large underground mining auxiliary transport platform with high speed, high efficiency and ultracapacity advantages, which was on the basis of the technology of split transport vehicle. Aimed at the high demanding of vehicles steering in tunnel, a coordinated vehicle steering control strategy is proposed. Research on elimination of the deviation in straight way, method of tracking control in the process of turning and the units passing ability was conducted. The control strategy provides a theoretical basis to the development of multisection independent steering vehicle, and it has significance of an introduction for the engineering practice.