Maps and Data
Find maps and charts showing transportation data and trends related to alternative fuels and vehicles.
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Clean Cities Energy Use Impact through Idle Reduction
Trend of energy impact by idle reduction policies and technologies from 2004 to 2018 Last update January 2020
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Clean Cities Cumulative Energy Use Impact
Cumulative trend of reduced fuel use and increased fuel diversity from 1994 to 2018 Last update January 2020
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Clean Cities Annual Energy Use Impact
Trend of reduced fuel use and increased fuel diversity from 1994 to 2018 Last update January 2020
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Law and Incentive Additions by Fuel/Technology Type
Trend of state law and incentive enactments, listed by the targeted technology or fuel type, from 2002 to 2019 Last update March 2020
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Clean Cities Coalition Locations
Displays coalition locations and boundaries across the United States Last update January 2020
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Clean Cities Energy Use Impact through Idle Reduction
| 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | |
| Truckstop Electrification | 2.6 | 3.5 | 1.2 | 1.8 | 1.3 | 2.6 | 1.9 | 2.5 | 3.3 | 3 | 2.9 | 3.1 | 3.4 | 2.666326329324 | 2.77185 |
| On-Board IR and Policies | 9.4 | 6.3 | 7.2 | 4.2 | 6.4 | 12.1 | 23.2 | 29.7 | 27.8 | 26.5 | 35 | 33.6 | 35.5 | 41.574246844545 | 40.08823 |
Notes: Savings are measured in gasoline gallon equivalents (GGEs), representing a quantity of fuel with the same amount of energy contained in a gallon of gasoline.
This chart shows the annual energy impact of Clean Cities coalition activities through various idle-reduction policies and technologies.
To view more details, notes, and acronyms, please download the Excel spreadsheet.
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