About Robert Harley (Edit profile)

Robert Harley is a Professor of Civil and Environmental Engineering at the University of California, Berkeley (harley@ce.berkeley.edu).

Driving Down Diesel Emissions

Robert Harley

It’s official: exposure to diesel exhaust harms human health. In June 2012, the World Health Organization’s International Agency for Research on Cancer (IARC) updated its rankings, shifting diesel exhaust from a probable to a known carcinogen. In addition to being a human carcinogen, diesel emissions contribute to both smog and climate change. Download the PDF.

2018-02-12T22:15:03+00:00Categories: ACCESS 43, Fall 2013|Tags: |

Is Oxygen Enough?

Robert Harley

Recent amendments to the Clean Air Act require use of oxygenated gasoline during winter months in about forty urban areas across the United States. Generally, winter gasoline must contain 2.7 percent by weight of oxygen; California has been allowed to use a lower level, 2.0 percent. To determine the effectiveness of oxygenated gasoline in reducing carbon monoxide (CO) emissions, we designed a study to expand upon previous emission research by testing a large number of on-road vehicles.

Download the PDF.

2022-09-29T21:01:07+00:00Categories: ACCESS 07, Fall 1995|Tags: |
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