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duty trucks from the requirement to report engine manufacturer and make. The commenters said

this information would make it easier for States to determine the emissions and fuel economy

characteristics of their heavy-duty truck fleets.

NESCAUM also asked that the VIN identify the GVWR rating class for any vehicle in

Class G-2 or above, saying this information would greatly simplify States’ efforts to identify

whether a particular vehicle is subject to its emissions inspection program and the type of test

required under that program. Finally, NESCAUM urged that the VIN requirements for Class 3

through 8 heavy-duty vehicles incorporate the exact gross vehicle weight, a change it said would

enable States to better characterize their heavy duty fleets.

Agency Analysis and Response:

The primary purpose of the VIN system is to assure a unique identifier for each vehicle

sold in the United States and, in so doing, to deter theft and facilitate vehicle recall campaigns.

Deterring theft reduces the number of drivers on the road who are more likely to operate motor

vehicles in an unsafe manner. Recall campaigns are conducted to remedy defects related to

motor vehicle safety and incidents of noncompliance with Federal motor vehicle safety standards

that are determined to exist in a vehicle. The current VIN system has for nearly 30 years

fulfilled the need for unique vehicle identifiers and with today’s final rule should continue to do

so for at least the next 30 years.

The agency is not adopting at this time amendments to address any of the

recommendations for the VIN to include additional information elements, not because those

recommendations lack merit, but instead because there is a pressing need for today’s rule to be in

place to assure the uninterrupted continuation of the VIN system.

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