Alternative Fuel Vehicles (AFVs)

TxDOT is committed to utilize Texas natural resources and help reduce our nation's dependency on foreign oil supplies by maintaining an alternative fuel vehicle fleet. The 1992 Environmental Protection Act defines alternative fuels as the following:

  • Methanol, ethanol, and other alcohols
  • Blends of 85% or more of alcohol with gasoline (Ethanol, E85)
  • Natural gas and liquid fuels domestically produced from natural gas (CNG)
  • Liquefied petroleum gas (LPG, propane)
  • Coal-derived liquid fuels
  • Hydrogen
  • Electricity
  • Biodiesel
  • Fuels (other than alcohol) derived from biological materials

Decrease Dependence on Foreign Oil

In fiscal year 2010, our fleet of approximately 2,321 alternative fuel vehicles helped reduce gasoline consumption by 302,000 gallons. Of those 2,321 vehicles, 918 run on propane and 130 are hybrid. We also have almost 1,229 flex fuel vehicles, which run on either gasoline or ethanol. Some of the department's diesel-powered vehicles can utilize biodiesel.

We continue to increase our use of solar-powered traffic-control devices, such as flashing arrow boards and message boards, rather than gasoline or diesel-powered devices to further reduce the use of foreign oil.

Comply with Environmental Laws

Clean Diesel - We implemented the use of cleaner-burning diesel in accordance with a required state environmental plan two years ahead of schedule.

Hydrogen Fuel Cell - The Texas Legislature authorized us to study the possibility of using hydrogen-fueled vehicles in our fleet. We developed a plan which included analyzing the costs involved, identified funding options and determined the overall benefits of using hydrogen-fueled vehicles.