为了不妨碍轉向架設計的探討,前面一直沒有牵涉到綫路問題。車辆运行不良的原因往往輕易地完全归咎于綫路的不完善(实际上几乎不存在完善的綫路),正象工务工程师将車辆运行不良的原因归咎于車辆設計或維护不良一样。在这方面的深入討論还不多。大多数車辆对突然的横向偏差或左右高低偏差的反应是很敏感的,特別当速度大于50～60哩/小时时。突然的横向加速度和垂直的及横向的 In order not to hinder the discussion of bogie design, in the past has not involved the line problem. The reasons for poor vehicle performance tend to be easily and simply attributed to faulty lines (in fact there is virtually no perfect line) just as a utility engineer blames vehicle design or maintenance for poor running reasons. There is not much discussion in this area yet. Most vehicles are sensitive to abrupt lateral or left-right deviation, especially at speeds greater than 50-60 miles per hour. Sudden lateral acceleration and vertical and horizontal