00743726

Component

https://doi.org/10.3141/1587-13

http://scholar.google.com...oeer&publication_year=1997

The National Highway System (NHS) bill passed by Congress in November 1995 eliminated the national maximum speed limit. It has allowed states to set their own speed limits, which many have changed during the past year. This analysis examines the impact of speed limit changes 1 year after passage of the NHS. Oxides of nitrogen (NOx), carbon monoxide, and volatile organic compounds are analyzed and are found to have increased nationwide by up to 6%, 7%, and 2%, respectively. Much of the increase has occurred in western states, which generally have increased vehicle speeds more than in eastern and midwestern states. For example, in Texas NOx emissions are estimated to have increased by 35% due to large increases in highway and arterial speed limits.

This paper appears in Transportation Research Record No. 1587, Effects of Transportation on Energy and Air Quality.

English

p. 113-120

1997

Transportation Research Record

0309061695

Figures (1) ; References (4) ; Tables (5)

Carbon monoxide; Impact studies; Nitric oxide; Nitrogen oxides; Organic compounds; Pollutants; Revocation; Speed limits; Volatility

National Maximum Speed Limit

Increase; Volatile organic compounds

Western States

Environment; Highways; Law

TRIS, TRB, ATRI

Dec 29 1997 12:00AM

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