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City of Chicago. Matt Stewart Reducing Idling in the City Fleet. Idle-reduction Human Factors. Idling is almost entirely human choice, even after modifying vehicles for engine-off operation 2006 policy Five-minute limit for all city vehicles 2010 municipal ordinance - PowerPoint PPT Presentation
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City of Chicago
Matt StewartReducing Idling in the City Fleet
Idle-reduction Human Factors
Idling is almost entirely human choice, even after modifying vehicles for engine-off operation
• 2006 policy– Five-minute limit for all city vehicles
• 2010 municipal ordinance– Three-minute limit for all on-road, diesel-
powered vehicles
• Stickers, keychains, etc.• Eco-driving training
Idle-reduction Technology
• Hybrid vehicles– Eliminating idling more important than
propulsion efficiency
• Heaters– Coolant heaters– Air heaters
• Five-minute idle-shutdown timers– Aftermarket timers on MD/HD trucks– Factory shutdown option
Tracking Idling
• Fuel usage– Compare change in fuel consumption over
successive years while controlling other variables– Timed coolant heaters: 12.6% difference in GPM
change from one winter to the next versus trucks without heaters, saving 25,000 fuel gallons
• GPS data– Millions of records; system not designed for this– Argonne team has been able to find some impact
of idle-reduction efforts
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