Table 3-5. Commercial Vehicle Weight Enforcement Activities

Federal and state governments are very concerned about truck weight because of the damage that heavy trucks can do to roads and bridges. To monitor truck weight, approximately 200 million weighs are made each year, about half are weigh-in-motion and half static. Less than 1 percent of weighs discover violations.

Table in Excel format

	2000	2001	2002	2003
All weighs	192,991,221	198,459,894	208,429,680	177,369,377
All weighs Weigh-in-motion	92,908,114	98,177,442	106,662,180	95,078,759
All weighs Static weighs1	100,103,107	100,282,452	101,861,470	82,290,618
All weighs Static weighs Semiportable scales	NA	902,380	592,604	522,758
All weighs Static weighs Fixed scales	NA	98,751,448	99,710,078	81,276,662
All weighs Static weighs Portable scales	NA	628,624	1,558,788	491,198
Violations2	653,720	663,706	657,308	515,587
Violations2 Axle weight violations	NA	281,681	271,308	254,910
Violations2 Gross weight violations	NA	141,707	144,518	132,258
Violations2 Bridge weight violations	NA	240,318	241,482	128,419
Permits3	3,483,746	3,402,522	3,566,236	3,554,449
Permits3 Non-divisible trip permits	NA	2,685,971	2,603,257	2,629,392
Permits3 Non-divisible annual permits	NA	197,328	251,245	234,607
Permits3 Divisible trip permits	NA	226,100	240,782	258,206
Permits3 Divisible annual permits	NA	289,400	422,522	377,482
Permits3 Divisible overwidth permits	NA	3,723	48,430	44,762

Key: NA = not available.

¹Static weighs include the total vehicles weighed from semiportable, portable, and fixed scales.
²Violations include those from axle, gross, and bridge formula weight limits.
³Permits issued are for divisible and non-divisible loads on a trip or annual basis, as well as the overwidth movement of a divisible load.

Source: U.S. Department of Transportation, Federal Highway Administration, Annual State Certifications of Size and Weight Enforcement on Federal-aid Highways, as prescribed under CFR Part 657.