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.
 |
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.
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