CALTRANS
TRUCK SIZE
Weight Limitations
Summarized here are the California Vehicle Code (CVC) sections related to vehicle weight.
The CVC sections on this web page are paraphrased for brevity. For the full legal wording, please go to the on-line CVC Weight Sections 35550 - 35558.
GROSS WEIGHT |
|
UNIT |
MAXIMUM |
|
Vehicle Combination |
80,000 pounds |
AXLE WEIGHTS |
|
UNIT |
MAXIMUM |
|
Single Axle |
20,000 pounds |
|
Axle Group: less than 8'-6" between outer axles |
34,000 pounds |
|
Axle Group: 8'-6" or more between outer axles |
See the CVC weight chart below. |
GENERAL RULE
35550. (a) The gross weight on any one axle shall not exceed 20,000 pounds, and the gross weight upon any one wheel, or wheels, supporting one end of an axle, shall not exceed 10,500 pounds.
(b) The gross weight limit for any one wheel, or wheels, shall not apply to vehicles with loads of livestock.
(c) The maximum wheel load is the lesser of the following:
(1) The load limit established by the tire manufacturer, on the tire sidewall.
(2) A load of 620 pounds per lateral inch of tire width, as determined by the manufacturer's rated tire width on the tire sidewall. The steering axle, however, must go by the load limit by the tire manufacturer.
AXLE GROUP WEIGHT CHART
35551. (a) The total gross weight in pounds imposed on the highway by any group of two or more consecutive axles shall not exceed that given for the respective distance in the following table:
Distance in feet between |
2 axles |
3 axles |
4 axles |
5 axles |
6 axles |
4 |
34,000 |
34,000 |
34,000 |
34,000 |
34,000 |
5 |
34,000 |
34,000 |
34,000 |
34,000 |
34,000 |
6 |
34,000 |
34,000 |
34,000 |
34,000 |
34,000 |
7 |
34,000 |
34,000 |
34,000 |
34,000 |
34,000 |
8 |
34,000 |
34,000 |
34,000 |
34,000 |
34,000 |
9 |
39,000 |
42,500 |
42,500 |
42,500 |
42,500 |
10 |
40,000 |
43,500 |
43,500 |
43,500 |
43,500 |
11 |
40,000 |
44,000 |
44,000 |
44,000 |
44,000 |
12 |
40,000 |
45,000 |
50,000 |
50,000 |
50,000 |
13 |
40,000 |
45,500 |
50,500 |
50,500 |
50,500 |
14 |
40,000 |
46,500 |
51,500 |
51,500 |
51,500 |
15 |
40,000 |
47,000 |
52,000 |
52,000 |
52,000 |
16 |
40,000 |
48,000 |
52,500 |
52,500 |
52,500 |
17 |
40,000 |
48,500 |
53,500 |
53,500 |
53,500 |
18 |
40,000 |
49,500 |
54,000 |
54,000 |
54,000 |
19 |
40,000 |
50,000 |
54,500 |
54,500 |
54,500 |
Distance in feet between |
2 axles |
3 axles |
4 axles |
5 axles |
6 axles |
20 |
40,000 |
51,000 |
55,500 |
55,500 |
55,500 |
21 |
40,000 |
51,500 |
56,000 |
56,000 |
56,000 |
22 |
40,000 |
52,500 |
56,500 |
56,500 |
56,500 |
23 |
40,000 |
53,000 |
57,500 |
57,500 |
57,500 |
24 |
40,000 |
54,000 |
58,000 |
58,000 |
58,000 |
25 |
40,000 |
54,500 |
58,500 |
58,500 |
58,500 |
26 |
40,000 |
55,500 |
59,500 |
59,500 |
59,500 |
27 |
40,000 |
56,000 |
60,000 |
60,000 |
60,000 |
28 |
40,000 |
57,000 |
60,500 |
60,500 |
60,500 |
29 |
40,000 |
57,500 |
61,500 |
61,500 |
61,500 |
30 |
40,000 |
58,500 |
62,000 |
62,000 |
62,000 |
31 |
40,000 |
59,000 |
62,500 |
62,500 |
62,500 |
32 |
40,000 |
60,000 |
63,500 |
63,500 |
63,500 |
33 |
40,000 |
60,000 |
64,000 |
64,000 |
64,000 |
34 |
40,000 |
60,000 |
64,500 |
64,500 |
64,500 |
35 |
40,000 |
60,000 |
65,500 |
65,500 |
65,500 |
36 |
40,000 |
60,000 |
66,000* |
66,000 |
66,000 |
37 |
40,000 |
60,000 |
66,500* |
66,500 |
66,500 |
38 |
40,000 |
60,000 |
67,500* |
67,500 |
67,500 |
39 |
40,000 |
60,000 |
68,000 |
68,000 |
68,000 |
Distance in feet between |
2 axles |
3 axles |
4 axles |
5 axles |
6 axles |
40 |
40,000 |
60,000 |
68,500 |
70,000 |
70,000 |
41 |
40,000 |
60,000 |
69,500 |
72,000 |
72,000 |
42 |
40,000 |
60,000 |
70,000 |
73,280 |
73,280 |
43 |
40,000 |
60,000 |
70,500 |
73,280 |
73,280 |
44 |
40,000 |
60,000 |
71,500 |
73,280 |
73,280 |
45 |
40,000 |
60,000 |
72,000 |
76,000 |
80,000 |
46 |
40,000 |
60,000 |
72,500 |
76,500 |
80,000 |
47 |
40,000 |
60,000 |
73,500 |
77,500 |
80,000 |
48 |
40,000 |
60,000 |
74,000 |
78,000 |
80,000 |
49 |
40,000 |
60,000 |
74,500 |
78,500 |
80,000 |
50 |
40,000 |
60,000 |
75,500 |
79,000 |
80,000 |
51 |
40,000 |
60,000 |
76,000 |
80,000 |
80,000 |
52 |
40,000 |
60,000 |
76,500 |
80,000 |
80,000 |
53 |
40,000 |
60,000 |
77,500 |
80,000 |
80,000 |
54 |
40,000 |
60,000 |
78,000 |
80,000 |
80,000 |
55 |
40,000 |
60,000 |
78,500 |
80,000 |
80,000 |
56 |
40,000 |
60,000 |
79,500 |
80,000 |
80,000 |
57 |
40,000 |
60,000 |
80,000 |
80,000 |
80,000 |
58 |
40,000 |
60,000 |
80,000 |
80,000 |
80,000 |
59 |
40,000 |
60,000 |
80,000 |
80,000 |
80,000 |
60 |
40,000 |
60,000 |
80,000 |
80,000 |
80,000 |
*For allowable weights on two consecutive sets of tandems 36 feet or more apart, see 35551 (b) under EXCEPTIONS - TWO TANDEM AXLES.
MEASUREMENTS
35551. (c) The distance between axles shall be measured to the nearest whole foot. When a fraction is exactly six inches, the next larger whole foot shall be used.
35551. (e) These gross weight limits shall include all enforcement tolerances.
EXCEPTIONS - TWO TANDEM AXLES
35551. (b) Two consecutive sets of tandem axles may carry 34,000 pounds each if the distance between the first and last axles of the consecutive sets of tandem axles is 36 feet or more. The gross weight of each set of tandem axles shall not exceed 34,000 pounds and the gross weight of the two consecutive sets of tandem axles shall not exceed 68,000 pounds.
ALTERNATE AXLE GROUP WEIGHT CHART
35551.5. (a) This section shall apply only to combinations of vehicles which contain a trailer or semitrailer. Vehicles shall comply with either Section 35551 or with subdivisions (b), (c), and (d) of this section.
35551.5. (b) The gross weight imposed upon the highway by the wheels on any one axle of a vehicle shall not exceed 18,000 pounds and the gross weight upon any one wheel, or wheels, on one end of an axle and resting upon the roadway, shall not exceed 9,500 pounds, except that the gross weight imposed upon the highway by the wheels on any front steering axle of a motor vehicle shall not exceed 12,500 pounds.
The gross weight limit on any one wheel, or wheels, supporting one end of an axle shall not apply to vehicles with livestock loads.
The following vehicles are exempt from the front axle weight limits specified in this subdivision:
(1) Trucks transporting vehicles.
(2) Trucks transporting livestock.
(3) Dump trucks.
(4) Cranes.
(5) Buses.
(6) Transit mix concrete or cement trucks, and trucks that mix concrete or cement at, or adjacent to, a jobsite.
(7) Motor vehicles that are not commercial vehicles.
(8) Vehicles operated by any public utility furnishing electricity, gas, water, or telephone service.
(9) Trucks or truck tractors with a front axle at least four feet to the rear of the foremost part of the truck or truck tractor, not including the front bumper.
(10) Trucks transporting garbage, rubbish, or refuse.
(11) Trucks equipped with a fifth wheel when towing a semitrailer.
(12) Tank trucks which have a cargo capacity of at least 1,500 gallons.
(13) Trucks transporting bulk grains or bulk livestock feed.
35551.5. (c) The total gross weight by any group of two or more consecutive axles where the distance between the first and last axles is 18 feet or less shall not exceed:
Distance in feet between first and last axles of group |
Allowed load in pounds on group of axles |
4 |
32,000 |
5 |
32,000 |
6 |
32,200 |
7 |
32,900 |
8 |
33,600 |
9 |
34,300 |
10 |
35,000 |
11 |
35,700 |
12 |
36,400 |
13 |
37,100 |
14 |
43,200 |
15 |
44,000 |
16 |
44,800 |
17 |
45,600 |
18 |
46,400 |
35551.5. (d) The total gross weight where the distance between the first and last axles is more than 18 feet shall not exceed:
Distance in feet |
Allowed load in pounds |
19 |
47,200 |
20 |
48,000 |
21 |
48,800 |
22 |
49,600 |
23 |
50,400 |
24 |
51,200 |
25 |
55,250 |
26 |
56,100 |
27 |
56,950 |
28 |
57,800 |
29 |
58,650 |
30 |
59,500 |
31 |
60,350 |
32 |
61,200 |
33 |
62,050 |
34 |
62,900 |
35 |
63,750 |
36 |
64,600 |
37 |
65,450 |
38 |
66,300 |
39 |
68,000 |
40 |
70,000 |
41 |
72,000 |
42 |
73,280 |
43 |
73,280 |
44 |
73,280 |
45 |
73,280 |
46 |
73,280 |
47 |
73,280 |
48 |
73,280 |
49 |
73,280 |
50 |
73,280 |
51 |
73,280 |
52 |
73,600 |
53 |
74,400 |
54 |
75,200 |
55 |
76,000 |
56 or over |
76,800 |
MEASUREMENTS
35551.5. (e) The distance between axles shall be measured to the nearest whole foot. When a fraction is exactly six inches, the next larger whole foot shall be used.
35551.5. (f) The gross weight limits shall include all enforcement tolerances.
EXCEPTION - FIRE TRUCKS
The California Code of Regulations, Title 21, allows increased axle weights on fire trucks. For more details, see this website: Fire Truck Exemptions.
EXCEPTION - LOG HAULERS
35552. (a) Vehicles transporting logs may exceed tandem weight by 1,500 pounds, and may carry a gross weight of 69,000 pounds on two consecutive sets of tandem axles, under certain conditions. For more information, see the web page: Log Haulers Weight Exemptions.
(b) One set of tandem axles of log trucks shall be in compliance with Section 35551 if the total gross weight of 34,000 pounds is not exceeded by more than 1,500 pounds. Two consecutive sets of tandem axles shall be in compliance with Section 35551 if the consecutive sets of tandem axles do not carry a combined total gross weight of more than 69,000 pounds, if:
- the total gross weight on any one set does not exceed 35,500 pounds, and
- the distance between the first and last axle of the consecutive sets of tandem axles is 34 feet or more.
All such truck and vehicle combinations shall be subject to all other provisions.
(c) The gross weight limits expressed in this section shall include all enforcement tolerances.
(d) If any total gross weight is exceeded, the allowed weight in pounds set forth in Section 35551 shall be the maximum permitted weight for determining the fine for the violation as specified in the table in Section 42030; except that, whenever the violation is for exceeding the total gross weight for two consecutive sets of tandem axles, and if the overall distance between the first and last axle of such sets is 34 feet or more, the allowed weight on the two consecutive sets shall be 68,000 pounds.
(e) This section shall have no application to highways which are a part of the National Network (NN). (To determine which routes are NN, click here for the Truck Route List in Excel and look for NN in the column "Type.")
EXCEPTION - LOADING & UNLOADING
35553. Weight limits shall not apply to any vehicle in the immediate vicinity of an unloading or loading area while preparing for or in the process of unloading or loading, provided any overload is incidental to and necessitated by such action; and provided that the action does not occur on a bridge or highway structure.
This section shall have no application to highways which are a part of the National Network (NN). (To determine which routes are NN, click here for the Truck Route List in Excel and look for NN in the column "Type.")
EXCEPTION - BUSES
35554. The gross weight on any one axle of a bus shall not exceed 20,500 pounds.
EXCEPTION - COTTON MODULE MOVERS
35555. (a) Cotton module movers have a weight exemption under certain circumstances. For details, see the web page: "Cotton Module Movers."
LEGAL USE OF WEIGHT CERTIFICATES
35557. (a) Vehicle weight certificates issued on or after January 1, 1984, and other associated weight records, if approved by the Director of Food and Agriculture, are subject to legal process in a criminal or civil proceeding if due to a violation of the Business and Professions Code, Division 5, Chapter 7 , Chapter 7.3, and Chapter 7.7.
SCALES AT FACILITY
35558. If an axle weigh scale is at the loading facility, the load shall be weighed before the vehicle leaves the facility. In a port facility, this requirement only applies if the scale is located in outbound lanes.
EXCEPTIONS - LOCAL OVERWEIGHT PERMITS
35700. (a) Any county or city may permit loads on highways under their jurisdictions of a maximum gross weight in excess of that specified in this code. (b) This section does not apply to state highways.
EXCEPTIONS - INTERNATIONAL CONTAINERS
Per CVC Section 35700.5(a), trucks hauling international containers may be issued permits for up to 95,000 pounds GVW on segments of Routes 1, 47, and 103 under certain conditions. See web site: "International Container Weight Exemption in California."
WEIGHT RESTRICTIONS
35701. (a) Any city, or county for a residence district, may prohibit the use of a street by any commercial vehicle or by any vehicle exceeding a maximum gross weight limit, except:
- vehicles subject to the Public Utilities Code Sections 1031 through 1036 (passenger stage corporations), and
- vehicles used for the collection and transportation of garbage using traditionally used routes in San Diego County.
(b) The ordinance shall not be effective until appropriate signs are erected.
(c) No ordinance adopted after November 10, 1969 shall apply to any state highway on the National Network (NN). (To determine which routes are NN, click here for the Truck Route List in Excel and look for NN in the column "Type."), unless approved by a two-thirds vote of the California Transportation Commission.
(d) The solid waste management plan prepared under Section 66780.1 of the Government Code by San Diego County may designate the traditionally used routes.
(e) "Traditionally used route" means any street used for one year or more as access to or from a solid waste disposal site.
35702. Local weight limits are only effective on local roads. State highway weight limits must be approved by the Department of Transportation. An alternate route must be provided.
PICK UPS & DELIVERIES EXEMPTED
35703. No ordinance adopted pursuant to Section 35701 shall prohibit any commercial vehicles coming from an unrestricted street having ingress and egress by direct route to and from a restricted street when necessary for:
- picking up or delivering goods from or to any building or structure on the restricted street, or
- delivering materials used in the repair, alteration, remodeling, or construction of any building or structure on the restricted street for which a building permit has previously been obtained.
PUBLIC UTILITIES EXEMPTED
35704. No ordinance adopted pursuant to Section 35701 to decrease weight limits shall apply to any vehicle owned by a public utility or a licensed contractor while necessary for the construction, installation, or repair of any public utility.
FUNDING
35705. Section 35701 shall not be applicable to any city street on which money from the State Highway Account in the State Transportation Fund has been used for construction or maintenance except when the legislative body of the city, after notice and hearing, determines to reduce weight limits on such streets. For more information, see the CVC Section 35705.
COUNTIES
35706. Counties may reduce the permissible weight of vehicles and loads on unimproved county highways or on county bridges.
For more information on Weights and Local Authority, and Weights and Bridges, see the CVC Division 15, Chapter 5 ("Weight"), Article 4 ("Local Authorities") Sections 35706 to 35722. and Article 5 ("Bridges and Other Structures") Sections 35750 to 35755.
CONTACTS -- PERMIT LOADS
FOR OVERSIZE OR OVERWEIGHT PERMITS, CONTACT STAFF IN THE TWO MIDDLE COLUMNS OF THIS WEB PAGE: OFFICE OF TRUCK SERVICES PHONE LIST.
CONTACTS -- NON-PERMIT LOADS
Caltrans Legal Truck Size & Weight Work Group
Casey Robb
Manuel Fonseca
General number (916) 654-5741
E-mail: Truck Size & Weight Unit.
Return to the Caltrans "Office of Truck Services" page.
Revised 1/29/09.