Carbon monoxide automobile emissions measured from the interior of a traveling automobile

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Science  17 Mar 1978:
Vol. 199, Issue 4334, pp. 1203-1204
DOI: 10.1126/science.75569


During a procedure to monitor carbon monoxide (CO) concentrations inside a traveling car, it was discovered that CO emissions from individual passing vehicles produced accurately measurable increases in the CO concentration. The CO produced by individual vehicles varied by three orders of magnitude; this finding demonstrates that a relatively small number of cars can be responsible for a high percentage of total vehicle CO Emissions.