U.S. Department of Energy Energy Efficiency and Renewable Energy
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NREL Leads Effort to Get Traffic Moving in Right Direction

A blue graphic of a hand holding a smartphone connected by yellow dots to the graphics of people and public transportation.

A new smartphone tool will help guide travelers through cities in the most energy-efficient way possible.

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August 26, 2015


EcoCar 3 Teams Amplify Outreach with Clean Cities Collaboration

A photo of a girl in a yellow dress with red hair and a girl in a black dress with black hair, smiling with trophies.

Learn how EcoCAR 3 teams and Clean Cities coalitions make for a winning combination.

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August 11, 2015


Clean Cities and NPS Team Up to Promote Sustainable Transportation

A photo of two brown and white shuttle buses in front of large redwood trees.

Campaign encourages practicing green transportation strategies as one of the easiest ways to reduce greenhouse gas emissions.

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August 6, 2015


Feeling Pain at the Pump? Factors That Affect Fuel Prices

Graphic comparing regular gasoline retail price of $2.72 per gallon to diesel retail price of $2.89 in May 2015. For gasoline, the price consisted of 17% taxes, 10% distribution and marketing, 22% refining, and 51% crude oil. For diesel, the price consisted of 18% taxes, 17% distribution and marketing, 17% refining, and 48% crude oil.

When gasoline and diesel prices go up, it's often due to numerous and complex factors.

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July 20, 2015


Summer Road Trip in Your Future? Cut Fuel Costs When the Temperature Heats Up

Photo of a couple in a silver convertible driving down a dirt road in the countryside.

Improve your fuel economy and save money on fuel this summer with these simple tips.

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May 19, 2015


How Heavy is Too Heavy? Idle Reduction Equipment Impacts Weight Limit Restrictions

Photo of a red semi-truck driving on a highway surrounded by forest.

Learn how idle reduction technologies affect interstate weight-limit restrictions for heavy-duty vehicles.

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April 20, 2015