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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

empty Cell 2000 2001 2002 2003
All weighs192,991,221198,459,894208,429,680177,369,377
All weighs
Weigh-in-motion
92,908,11498,177,442106,662,18095,078,759
All weighs
Static weighs1
100,103,107100,282,452101,861,47082,290,618
All weighs
Static weighs
Semiportable scales
NA902,380592,604522,758
All weighs
Static weighs
Fixed scales
NA98,751,44899,710,07881,276,662
All weighs
Static weighs
Portable scales
NA628,6241,558,788491,198
Violations2653,720663,706657,308515,587
Violations2
Axle weight violations
NA281,681271,308254,910
Violations2
Gross weight violations
NA141,707144,518132,258
Violations2
Bridge weight violations
NA240,318241,482128,419
Permits33,483,7463,402,5223,566,2363,554,449
Permits3
Non-divisible trip permits
NA2,685,9712,603,2572,629,392
Permits3
Non-divisible annual permits
NA197,328251,245234,607
Permits3
Divisible trip permits
NA226,100240,782258,206
Permits3
Divisible annual permits
NA289,400422,522377,482
Permits3
Divisible overwidth permits
NA3,72348,43044,762

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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