§ 393.44 Front brake lines, protection.
发布02-19
生效03-23
摘要总结AI 辅助解读
该条款为美国联邦法规第49篇（交通）中关于巴士前制动管路保护的技术规范。规定装备气制动的巴士，若任一前轮制动管路破裂，驾驶员仍须能操作后轮制动。原文注明该规则源自1988年12月7日发布的53 FR 49400，属于车辆制造与改装的静态技术标准，不涉及跨境物流申报、关税或运输合同义务变更，建议相关从业者仅作背景知悉。
On every bus, if equipped with air brakes, the braking system shall be so constructed that in the event any brake line to any of the front wheels is broken, the driver can apply the brakes on the rear wheels despite such breakage. The means used to apply the brakes may be located forward of the driver's seat as long as it can be operated manually by the driver when the driver is properly restrained by any seat belt assembly provided for use. Every bus shall meet this requirement or comply with the regulations in effect at the time of its manufacture.
[53 FR 49400, Dec. 7, 1988]