3轮或4轮骑士平衡重，电池供电。倾斜门架，卡车前叉承受重物。使用轮廓实心（超弹性）或充气轮胎，可应对坚硬，不理想的表面。在某些应用中可能需要缓冲轮胎。

        3 or 4 wheeled rider counterbalance, battery electric powered. Tilting mast, with load carried on forks in front of the truck. Will cope with hard, less than perfect surfaces using either contoured solid (superelastic) or pneumatic tyres. Cushion tyres may be required for some applications.