法规速查Regulation Navigator
先看懂要求，再查清依据。Understand the rule. Find its source.
部分资料含历史版本或来源限制。收录日期不代表现行性已复核；请先核对每项官方来源、版本和适用范围。Some records contain historical versions or source limitations. Capture dates do not establish a review of current requirements; check each official source, edition and scope before use.
法规索引Regulation index
按中文名称了解每条管什么，再展开查看解读与官方原文。Browse by subject, then expand an entry for available explanations and official text.
California Vehicle Code § 21655California Vehicle Code § 21655
California Vehicle Code § 22350California Vehicle Code § 22350
California Vehicle Code § 22406California Vehicle Code § 22406
面向加州公路上的货车／牵引车，具体规则按车辆轴数、是否拖挂和道路标志确定。联邦安全驾驶规则及临时封路、现场指挥仍需同时遵守。For trucks and truck tractors on California highways, with applicability determined by axle count, towing and signs. Federal safety rules, temporary closures and traffic-control directions also apply.
三轴及以上或拖挂的货车，一般限速 55 mphThree-or-more-axle or towing trucks generally have a 55 mph maximum
- 具体要求What the rule requires
- 本条规定，三轴及以上货车／牵引车，以及拖带其他车辆的货车／牵引车，不得超过 55 mph。即使小客车适用更高限速，这些车辆仍须遵守自己的限速。This section prohibits trucks or truck tractors with three or more axles, and trucks or truck tractors towing another vehicle, from exceeding 55 mph. A higher speed limit used by passenger traffic does not authorize the truck to use it.
No person may drive any of the following vehicles on a highway at a speed in excess of 55 miles per hour:
(a) (a) A motortruck or truck tractor having three or more axles or any motortruck or truck tractor drawing any other vehicle.
使用固定来源版次；适用日期与例外以原文及历史沿革为准。Uses a fixed source edition; check the original and statutory history for operative dates and exceptions.
法规原文 · 英文REGULATION TEXT · ENGLISH
California Vehicle Code § 22406California Vehicle Code § 22406
官方来源快照；不代表已核对现行汇编及后续修订。请核对来源版本。Official-source snapshot; current consolidated law and subsequent amendments have not been verified.
展开英文原文Read the English original收起英文原文Hide the English original
CA Vehicle Code § 22406 · California Vehicle Code § 22406
California Vehicle Code § 22406
Amended by Stats. 2000, Ch. 787, Sec. 22. Effective January 1, 2001.
No person may drive any of the following vehicles on a highway at a speed in excess of 55 miles per hour:
(a)A motortruck or truck tractor having three or more axles or any motortruck or truck tractor drawing any other vehicle.
(b)A passenger vehicle or bus drawing any other vehicle.
(c)A schoolbus transporting any school pupil.
(d)A farm labor vehicle when transporting passengers.
(e)A vehicle transporting explosives.
(f)A trailer bus, as defined in Section 636.
依据关联的官方原文及官方项目说明起草。中文和英文解读均为 CTAC AI 辅助工作稿，未经人工审核；教学案例不是实际会员记录。采集日期不是法规生效日期。Drafted from linked official texts and agency guidance. Both language interpretations are CTAC AI-assisted drafts pending human review; examples are illustrative, not member records. Capture dates are not legal effective dates.
California Vehicle Code § 23123.5California Vehicle Code § 23123.5
California Vehicle Code § 27459California Vehicle Code § 27459
中文为 CTAC 白话说明，不是官方译文，也不构成个案法律意见。请先核对适用范围、来源版本与最新官方通知。CTAC plain-language explanations are not official translations or case-specific legal advice. Check scope, source editions and current official notices.