| 摘要 |
<p>A load carrying vehicle, especially a semi trailer that comprising a driving part at a front end, that tows a trailer pivoted thereto around a fifth wheel. The driving part has at least one pair of steerable wheels at the front to be manually steered by a driver. The trailer has at least two or more longitudinally spaced rear axles each supported by a pair of rear wheels to carry the load. At least one of the rear axles is steerable with an angle of steer being calculated by a controller. At least one sensor is provided an output of which is dependent on lateral force exerted on one or more of the rear wheels of the vehicle. The sensor output is inputted into the controller which calculates an angle of steer of the one or more pairs of rear wheels. The controller actuating a steering means to move the one or more pairs of rear wheels to the calculated angle of steer.</p> |
