Maps and Data
Find maps and charts showing transportation data and trends related to alternative fuels and vehicles.
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Clean Cities Cumulative Energy Use Impact
Trend of reduced fuel use and increased fuel diversity from 1994 to 2016 Last update October 2018
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Clean Cities Petroleum Saved by Idle Reduction
Trend of petroleum saved by idle reduction policies and technologies from 2004 to 2016 Last update November 2018
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Clean Cities Annual Energy Use Impact
Trend of reduced fuel use and increased fuel diversity from 1994 to 2016 Last update October 2018
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Incentive Additions by Policy Type
Trend of state enactments listed by incentive type from 2002 to 2018 Last update March 2019
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Incentive and Law Additions by Fuel/Technology Type
Trend of state incentive and law enactments listed by the targeted technology or fuel type from 2002 to 2018 Last update April 2019
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Clean Cities Coalition Locations
Last update April 2019
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Clean Cities Cumulative Energy Use Impact
| 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | |
| Cumulative | 0.014661601 | 0.040918736 | 0.085554997 | 0.128156611 | 0.195587087 | 0.282579899 | 0.374642277 | 0.493822189 | 0.6263827660000001 | 0.782436996 | 1.015436996 | 1.202336996 | 1.504336996 | 1.798336996 | 2.085336996 | 2.567336996 | 3.086836996 | 3.727836996 | 4.389236995999999 | 5.130836996 | 5.930336996 | 6.827736996 | 7.805900852479337 |
Notes: Energy Use Impact is a metric that measures combined progress in both reduced energy use (from efficiency improvements) and fuel shifted from petroleum to cleaner domestic alternative fuels. The metric used is gasoline gallon equivalents (GGEs).
Since 1993, the cumulative energy impact of Clean Cities coalitions has surpassed 7.8 billion GGEs through alternative fuel use, fuel economy improvements, idle-reduction measures, and other strategies.
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