President Obama is preparing to announce new rules and regulations for fuel efficiency in the nation's fleet of medium and heavy duty trucks today. Obama will direct several federal agencies to begin the process of looking at better fuel efficiency in the lightly regulated truck segment.

The Obama administration already has rules for U.S. cars and light trucks- which must average 54.5 miles per gallon by 2025 under rules that took effect in 2012. Obama will travel to Maryland today to make the announcement at a Safeway distribution center.

The EPA and Transportation Departments will be tasked with making the new rules and improving efficiency on medium and heavy duty trucks by March 2016. The rules will build on standards that are already on the books.

The new rules show Obama's mission to improve fuel efficiency while reducing dependence on crude oil. By ordering the EPA and DOT to develop new standards, Obama is sidestepping gridlock in Congress, which remains quite divided.

Obama said in California's drought zone on Friday that a warming planet is intensifying the severity of droughts and other weather events. "Unless and until we do more to combat carbon pollution that causes climate change, this trend is going to get worse," he said.

Obama also plans to re-try cutting subsidies to the oil industry, which amount to $4 billion a year, and will push lawmakers to create a $2 billion energy security trust to aide development of advanced vehicles that run on alternate energy.