wheel track

基本解释

The contact zone width of crane wheel with track is analyzed by plane stress elastic theory.
采用平面应力弹性理论，对吊车车轮与轨道的接触区尺寸进行理论分析。
The analysis has been concentrated on parameters such as stability, lateral wheel track forces in curve and wheel wear indices.
分析的重点是直线稳定性、曲线轮轨横向力和轮轨磨耗指标等参数。
This structure can accomplish mechanical steering by a series of linkage. So the stability of the linkage becomes the key to steering and wheel track changing of crossing variable wheel track chassis.
该结构通过一系列连杆机构实现车辆的机械式转向，所以连杆机构运动的稳定性成为交叉变轮距底盘转向和改变轮距的关键。

Your steering wheel works, so you can turn the trolley car, if you want to, onto the side track killing the one but sparing the five.
而你的方向盘还没坏，只要你想，就可以把电车转到侧轨上去,牺牲一人挽救五人性命。
耶鲁公开课 - 公正课程节选

This video shows Translogic's Bradley Hasemeyer behind the wheel of the track-friendly (but also street legal, licensed as a motorcyle) vehicle and talking to the people who built it.
ENGADGET