U.S. Department of Energy Energy Efficiency and Renewable Energy
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Exactly How Big is Class 8? Understanding Vehicle Classifications

A chart visually showing the specific vehicle weight classes set by three federal agencies.

See how vehicle weight classifications determine laws, regulations, and incentives for your fleet.


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April 20, 2016


Vehicle Energy Data Resources Help Inform Local Leaders

A photo of traffic on an interstate with a city in the background.

City-specific data and tools are available online to help municipalities develop effective GHG-reducing programs.

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April 18, 2016


State Legislators Were Busy in 2015: Laws and Incentives Year in Review

Photo of a capital building with a wall in front of it that says, "State."

See which incentives, laws, and regulations were enacted last year.


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January 20, 2016


Alt Fuels are Taxed the Same? Think Again!

A photo of sign advertising the availability of various alternative fuels.

Learn how highway excise taxes based on volume, not energy content, result in significant inequity among fuels.

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September 22, 2015


As Returns from Gas and Diesel Taxes Decline, States Look to Alternative Models

Photo of a one-hundred dollar bill sticking out of a fuel receptacle on a red car.

Read about how states are trying new methods to make up for shortfalls in traditional motor fuel taxes.

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August 12, 2015


State-Specific Fuel and Vehicle Data at Your Fingertips

A screenshot of the new AFDC website State Information pages with videos, graphs, and data sets.

See the new data sets available about transportation and vehicles in your state.

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May 20, 2015