CARB Diesel Fuel Regulation For Intrastate Locomotives
This page last reviewed April 5, 2013
CARB Diesel Fuel Regulation Extended to Intrastate Locomotives
On November 18, 2004, the ARB approved new regulations to require the use of CARB diesel fuel in intrastate locomotives. Beginning January 1, 2007, diesel fuel sold for use in intrastate diesel-electric locomotives operating in California must meet the specifications of CARB diesel fuel.
Intrastate (diesel-electric) locomotives are defined as those locomotives that operate (at or greater than 90 percent of annual fuel consumption, mileage, and/or hours of operation) within the boundaries of the state of California. As compared to U.S. EPA ultra low sulfur diesel fuel, CARB diesel with lower levels of aromatics and higher cetane levels, can provide reductions of up to 6 percent NOx and 14 percent PM, respectively.