From: Stuart Wolpert
Published November 7, 2017 09:51 AM

Relocating bus stops would cut riders' pollution exposure, UCLA study finds

“The wait often means spending time in some of the most polluted locations in cities, close to intersections where cars, trucks and buses are continually stopping and accelerating, spewing out high concentrations of noxious exhaust,” said senior author Suzanne Paulson, UCLA professor of atmospheric sciences. “The exhaust contains gasses and large amounts of ultrafine particles that are essentially unregulated by the Environmental Protection Agency because the EPA regulates fine particles by weight, and these particles weigh so little,” she said.

“Our measurements show that traffic-related pollutant concentrations peak near intersections and decrease sharply with distance,” Paulson said. Bus riders’ exposure to the pollutants would be significantly reduced by moving bus and light rail stops 120 feet from busy intersections, her research team reports.

Continue reading at UCLA.

Image Source: Christelle Snow/UCLA

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