政策法规现行有效美国跨境陆运

§ 393.201 Frames.

效力	法规类型	发布日期	生效日期	发文机构
现行有效	部门规章	2026-02-19	2026-03-23	Code of Federal Regulations (CFR) - Transportation (Title 49)

发布02-19

生效03-23

摘要总结AI 辅助解读

本法规为美国联邦法规第49篇（交通）关于商业机动车（CMV）车架/底盘的技术标准。规定车架不得开裂、松动、下垂或断裂；固定驾驶室或车身的螺栓支架不得缺失损坏；轴间车架导轨法兰不得弯曲切割，除非符合制造商规格；严禁非制造商推荐的焊接修复或在上下导轨法兰钻孔。该条款直接决定车辆能否通过DOT检查及上路资格，违反将导致车辆被禁止运行（Out-of-Service）。

(a) The frame or chassis of each commercial motor vehicle shall not be cracked, loose, sagging or broken.
(b) Bolts or brackets securing the cab or the body of the vehicle to the frame must not be loose, broken, or missing.
(c) The frame rail flanges between the axles shall not be bent, cut or notched, except as specified by the manufacturer.
(d) Parts and accessories shall not be welded to the frame or chassis of a commercial motor vehicle except in accordance with the vehicle manufacturer's recommendations. Any welded repair of the frame must also be in accordance with the vehicle manufacturer's recommendations.
(e) No holes shall be drilled in the top or bottom rail flanges, except as specified by the manufacturer.

[53 FR 49402, Dec. 7, 1988, as amended at 70 FR 48055, Aug. 15, 2005]