SMOG WATCH

As the federal government prepares to tighten air pollution standards for the first time in a decade, here is a glance at how the Southland and other metropolitan areas match up to exiting standards:

South Coast

New York

Chicago

Houston

Washington, D.C.

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The distance Americans traveled for personal business increased by 137% from 1969 to 1990, with smaller increases for shopping trips and work travel. Trips to work accounted for the most household travel in 1990.

Average annual vehicle miles traveled

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Percent change Trip Purpose 1969 1977 1983 1990 change Home to work 4,183 3,815 3,538 4,853 16% Shopping 929 1,336 1,567 1,743 88% Other family or 1,270 1,444 1,816 3,014 137% personal business Social and recreation 4,094 3,286 3,534 4,060 -1% All Purposes* 12,423 12,036 11,739 15,100 22%

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* Includes for other purposes not shown, such as school, church, doctor, dentist

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Mean travel times to work in selected areas, 1980-1990 (in minutes)

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Percent Areas 1980 1990 Change San Diego MSA* 19.5 22.2 13.7% Los Angeles-Anaheim-Riverside CMSA** 23.6 26.4 11.9% Washington, D.C.-MD-VA MSA 27.2 29.5 8.5% San Francisco-Oakland-San Jose CMSA 23.9 25.6 6.9% Chicago-Gary-Lake County, IL-IN-WI CMSA 26.3 28.1 6.7% Miami-Fort Lauderdale, FL CMSA 22.6 24.1 6.5% St. Louis, MO-IL MSA 22.6 23.1 2.3% Denver-Boulder, CO CMSA 22.0 22.4 1.9% Cleveland-Akron-Lorain, OH CMSA 21.6 22.0 1.7% Houston-Gavelston-Brazoria, TX CMSA 25.9 26.1 0.7% New York-Northern New Jersey-Long Island CMSA 33.7 31.1 -7.7%

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*MSA-metropolitan statistical area

**CMSA-consolidated metropolitan statistical area

Source: AQMD, U.S. Department of Transportation