By Evan Reid, Founder of Haul Handbook · Updated Jul 18, 2026
California legal limits (no permit needed at or under these)
Axle weight limits
Gross weight is one ceiling; each axle group carries its own limit, and a load can be legal on gross weight yet overweight on an axle. Exceeding any of these needs an overweight permit.
Permit fees
- Annual eligibility
- Annual permits cover loads up to 12 feet 0 inches wide, 14 feet 0 inches high, and 40 feet 0 inches maximum kingpin-to-rear-axle, for one year. Repetitive permits (90 dollars, maximum 90 day duration) cover a repeated identical move up to 12 feet wide, 14 feet 6 inches high, and 90 feet long.
To price a specific load, try the oversize permit cost estimator, or compare every state on the national oversize permit table.
Escort thresholds
Travel restrictions
Superload and beyond-permit review
Loads past the standard single-trip permit thresholds get individual state review rather than an off-the-shelf permit.
Loads over 15 feet wide, over 17 feet high, or over 135 feet long require special Caltrans processing rather than standard issuance. Heights greater than 17 feet additionally require a written route survey from the applicant. Extra-legal weight moves are evaluated against the permit weight tables (for example 30,000 lb maximum on any single axle) and may require structure (bridge) review.
Legal limits and truck routes
The sourced limits fields carry California's width, height, length, and gross weight lines, plus the axle rules. Length is where the state gets particular: combination limits vary by configuration, longer semitrailers ride on a kingpin-to-rear-axle measurement, and cities and counties may restrict that measurement further on local roads. Caltrans also publishes truck route network maps that govern where each configuration may operate, so the network matters as much as the numbers.
Permit types and fees
Caltrans issues single trip, annual, repetitive, sea container, variance, and motorsport permits. A single trip permit covers one move for a set run of consecutive days, an annual permit covers qualifying dimensions for a full year, and a repetitive permit covers an identical move repeated over a bounded window. Each carries a flat fee, and the sourced fee schedule lists the amount, the duration, and the dimension ceilings for each type.
Escorts, curfews, and travel windows
California publishes no statewide width-to-escort table. Pilot car needs for a single trip permit come from the Caltrans pilot car maps for the route plus the conditions printed on the permit itself, so two moves of the same width can carry different escort requirements. When a permit calls for a CHP escort, you schedule it with the CHP and the CHP bills separately. Wider loads face travel curfews around the Los Angeles, Sacramento, San Diego, and San Francisco urban areas, and holiday travel runs under its own published conditions.
Superloads
Moves past the width, height, or length lines in the sourced superload field leave standard issuance and go through special Caltrans processing. The tallest moves need a written route survey from the applicant before the permit issues, and extra-legal weight is checked against the permit weight tables with possible structure review along the route. Build lead time into any move near those lines.
How to read this page
A value reading "Not confirmed" means we could not verify the figure on an official agency page at review time, so it stays open rather than guessed. Superload moves above the standard permit thresholds get individual review by the state; contact the permit office named on this page. For the rest of the California permit stack, see California trucking permits.
Frequently asked questions
When do I need a Caltrans transportation permit?
- When a vehicle or load exceeds the legal width, height, length, or gross weight limits recorded on this page and the move uses the state highway system. Moves on city or county roads need permits from those jurisdictions instead.
What does an oversize permit cost in California?
- Each permit type carries a flat fee, and the sourced fee schedule on this page lists the amount and duration for single trip, annual, and repetitive permits. CHP escort charges, when a permit requires them, are billed separately by the CHP.
At what width do I need pilot cars in California?
- There is no single statewide answer. Caltrans determines pilot car requirements per route segment through its pilot car maps and the conditions printed on the permit, so the same load can need different escorts on different routes. Check the maps for your route rather than assuming a width line.
Are there travel time restrictions on oversize loads?
- Yes. Wider loads face curfews around the major urban areas named in the sourced field, holiday travel runs under published special conditions, and travel-hour limits appear as conditions on the permit itself rather than as one statewide rule.
What counts as a superload in California?
- A move past the width, height, or length lines recorded in the sourced superload field. Those moves take special Caltrans processing instead of standard issuance, and the tallest ones need a written route survey from the applicant.
Haul Handbook publishes educational information about trucking registration and compliance requirements. This is not legal, financial, or tax advice. Rules, fees, and deadlines change; confirm with the agency before you file or pay.