Freight Facts and Figures 2009

Table 3-4. Commercial Vehicle Weight Enforcement Activities: 2005-2008

Federal and state governments are 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 were made in 2008, about 60 percent were weigh-in motion and 40 percent were static.  Less than 1 percent of weighs discover violations.

Table in Excel format

	2005	2006	2007	2008
All weighs	230,465	(R) 229,451	217,444	200,419
Weigh-in-motion	136,381	(R) 142,599	132,258	119,826
Static weighs, total1	94,084	(R) 86,852	85,186	80,593
Semiportable scales	494	423	426	358
Fixed scales	93,038	(R) 85,900	84,214	79,645
Portable scales	552	(R) 529	547	591
Violations, total2	568	(R) 621	530	555
Axle weight violations	275	(R) 270	234	249
Gross weight violations	118	(R) 150	127	120
Bridge weight violations	174	(R) 202	170	186
Permits, total3	3,626	4,598	4,828	5,216
Non-divisible trip permits	2,712	3,399	3,743	3,693
Non-divisible annual permits	233	251	332	322
Divisible trip permits	288	426	398	490
Divisible annual permits	393	522	354	710

Key: R = revised.

¹Static weights include the total number of 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 on an annual basis, as well as the overwidth movement of a divisible load.

Note:

Incomplete data from D.C. (2008), Hawaii (2008), Indiana (2005), Michigan (2008), Pennsylvania (2005 and 2006), and South Dakota (2006 and 2007).

Source:

U.S. Department of Transportation, Federal Highway Administration, Office of Freight Management and Operations, Annual State Certifications of Size and Weight Enforcement on Federal-aid Highways, as prescribed under CFR Part 657, personal communication, July 15, 2009.

 

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