WeightAxle Limits
Section § 35550
This law outlines weight limits for vehicles on highways. The weight on one axle can't be more than 20,000 pounds, and a single wheel can't support more than 10,500 pounds. However, these limits don't apply to vehicles carrying livestock. Additionally, the maximum allowable load on a wheel is determined by either the tire manufacturer's limit as shown on the sidewall or by a calculation based on tire width, excluding the steering axle.
Section § 35551
This section regulates the maximum weight allowed for vehicles on highways based on the number of axles and the distance between them. It sets specific gross weight limits in pounds for groups of axles according to a detailed table. Additionally, it specifies that two sets of tandem axles can each have a maximum weight of 34,000 pounds, provided the sets are at least 36 feet apart, but their combined weight cannot exceed 68,000 pounds.
The measurements between axles are rounded up to the nearest foot if exactly six inches. This rule doesn't override any bans on using highways or bridges set out elsewhere. The weight limits here include enforcement tolerances, meaning they're the absolute maximum allowed by law.
the extremes of any group
of 2 or more consecutive
Section § 35551.5
This section applies to vehicle combinations that include a trailer or semitrailer. It sets weight limits that also consider the distance between axles. For any single axle, the weight on the highway can't exceed 18,000 pounds, while the weight on any front steering axle can't exceed 12,500 pounds, except for certain exempt vehicles like buses and dump trucks. Additionally, weight limits are determined based on axle group spacing, with a detailed table providing specific limits for different axle spacings.
The statute acknowledges existing laws that allow prohibiting heavy vehicles from using certain roads and structures. It emphasizes that no new, heavier weight limits are introduced beyond those in place before 1976.
Section § 35552
This law only applies to trucks or vehicle combinations that carry just logs. When such trucks have tandem axles, they're in compliance if their weight doesn't exceed certain limits: one set of axles may go up to 35,500 pounds, but together two consecutive sets can't go over 69,000 pounds, with a required distance of 34 feet between the first and last axle of those sets. All general weight rules for vehicles still apply, and these rules include enforcement tolerances, meaning slight weight exceedances are acknowledged. If a truck's weight exceeds the permitted limit, penalties are calculated based on a specific section, though exceptions exist for certain tandem axle configurations. Lastly, this doesn't apply to interstate highways, and the section is known as the Christensen-Belotti Act.
Section § 35553
This law states that some rules about vehicle loads don’t apply when a vehicle is loading or unloading near the loading area. However, this exception doesn’t apply if it’s happening on a bridge, highway structure, or on highways that are part of the national interstate and defense system.
Section § 35554
This California law sets weight limits for buses, particularly concerning the weight on each axle. Generally, the maximum allowed gross weight for a bus axle is 20,500 pounds, with certain exceptions for transit buses marked by specific procurement dates. However, special weight limits apply to transit buses acquired between January 1, 2016, and later. For example, transit buses bought between 2016 and 2018 can weigh up to 23,000 pounds per axle, whereas buses procured from 2019 must not exceed 22,000 pounds per axle. Special provisions exist for articulated or zero-emission buses, with their axle weight limits gradually reducing over specified periods between 2016 and 2022. Additionally, transit operators must notify cities and counties about bus routes and weights, and the law restricts transit buses from exceeding federal highway weight limits. If a bus axle exceeds a weight of 20,000 pounds, it must be supported by four wheels.
Section § 35555
This law is for cotton module movers and trucks pulling them in California from September 15 to March 15. During this time, these vehicles don't have to follow the usual weight rules on certain highways. They can cross state highways and use county roads in several counties unless local authorities say otherwise.
Cotton module movers can go on state highways if: drivers have the right license, follow specific vehicle equipment regulations, don't exceed the weight limit by over 6,000 pounds, and have a commercial license if they're heavier.
The exceptions don't apply on national network routes designated by federal authorities.
Section § 35557
This law allows district attorneys to inspect and use certain vehicle weight certificates and related records in legal cases, but only if they get approval from the Director of Food and Agriculture. The records that can be used include those issued on or after January 1, 1984, in relation to specific chapters of the Business and Professions Code.
However, any certificates or records issued before that date cannot be inspected or used in any legal proceedings related to violations of this chapter.
Section § 35558
If a person or business has a scale for weighing vehicle axle loads at their loading facilities, they must weigh a load upon the driver's request before the vehicle leaves, assuming it's suspected to be overweight. For port facilities, this applies only if the scale is in the outbound lanes.
Section § 35559
This law allows the power unit of near-zero and zero-emission vehicles to weigh up to 2,000 pounds more than usual weight limits. However, the total weight of the vehicle must not exceed 82,000 pounds. The extra weight can be shared across multiple power units in the vehicle, but cannot exceed the 2,000-pound allowance. This does not mean these vehicles are exempt from other weight rules, such as tire weight limits or other weight restrictions detailed in related articles. It is only applicable if federal law permits it. A power unit, in this case, refers to the part of the vehicle that generates driving power independently.