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POLLUTION * USA - CARB study shows truck emissions devices are rarely tampered with
Truckers in California rarely tamper with emissions devices such as diesel particulate filters or ECMs, according to a recent study commissioned by the California Air Resources BoardCAL,USA -Land Line Magazine, by Charlie Morasch -September 7, 2007: -- ... The study surveyed maintenance shops and CARB enforcement’s roadside inspection statistics and found that less than 1 percent of the trucks surveyed showed evidence that their emissions technology had been tampered with... The test sent the trucks through surface streets and two highways around Stockton, CA, finding that some of the trucks emitted more NOx for higher speeds while others didn’t. Also, on surface street driving, the truck with the oldest engine tested had the most particulate matter emissions, while on highway driving the two newest trucks had the highest PM emissions... Predictably, the study concluded that the oldest truck, a 1996 truck with a Cummins model engines, emitted the most pollutants for most driving categories... (Photo by fhwa.dot.gov - Long-haul trucks like this one represent a significant percentage of mobile source emissions of air pollutants. Technologies to reduce truck idling can help)
Labels: trucks' pollution
posted by Unknown @ 6:08 AM
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