United States Department of Transportation
i
Synthesis of Research on the Use of Idle Reduction Technologies in Transit
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2015-10-01
[PDF-1.64 MB]
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TRIS Online Accession Number:01588716
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Edition:Final Report
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Abstract:There are several potential ways to reduce vehicle tailpipe emissions, including reducing sulfur in fuel, replacing older engines, tightening emission standards, installing pollution control equipment on heavy-duty vehicles, and others, but the most direct method to reduce harmful emissions is to limit unnecessary vehicle idling. Technologies that can be installed on-board vehicles to reduce the amount of idling without sacrificing vehicle energy needs or driver utility include direct-fire heaters, auxiliary power units (APU), thermal storage systems, on-board batteries, automatic engine shut-off devices, and other equipment. Additionally, parking space electrification also allows the reduction of excessive stationary idling of heavy-duty vehicles by providing them with an outside power source to run vehicle accessories without running the main engine. Reduction in idling can be achieved not only by installing specialized equipment on vehicles, but also through a change in operational procedures. Idle reduction policies may include limiting engine warm-up, shutting down the engine after a certain time of idling, improving vehicle scheduling and dispatching, minimizing vehicle queuing, and other procedures. Federal, state, and local incentive programs can help with covering some of the incremental costs of idle reduction equipment acquisition and installation. In the U.S., there are 106 laws, regulations programs, and incentives dealing with idle reduction at the federal, state, and local levels.
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