From  the “I can’t believe we needed a study to determine this” and Hansen’s Death Trains department, the actual unedited press release is below, commentary follows.

Diesel trains may expose passengers to exhaust

Levels of certain airborne pollutants are up to nine times higher in train cars directly behind diesel locomotives than on a busy city street


A new study from U of T Engineering finds that diesel trains may expose passengers to elevated levels of certain pollutants, especially if they are sitting directly behind the locomotive.

“Imagine yourself driving down a busy highway in a convertible, and spending your entire commute sitting behind a very large diesel truck,” said Greg Evans, a professor of Chemical Engineering and director of the Southern Ontario Centre for Atmospheric Aerosol Research (SOCAAR). “That’s comparable to the levels we see here.”

Evans and Dr. Cheol-Heon Jeong, a senior research associate at SOCAAR, measured the concentration of airborne particles using two types of portable instruments: one that detects black carbon (BC) and one that detects ultrafine particles (UFP).


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