Trade winds clear away the car emissions from this city of 900,000, and there's little heavy industry.

Many of the mandates on car emissions originated with California and spread to other states and the federal government.

It wants even deeper reductions in car emissions than California has proposed.

Reducing car emissions helps minimize the potential for high ozone levels, so residents were asked to use public transportation if possible.

Connecticut has done car emissions testing since 1983.

This helps people decide what vehicle to buy and enables in-service testing of car emissions.

I come from the Tyrol, a region which is very heavily affected by car emissions.

More recently, we have focused on reducing car emissions in order to combat air pollution and climate change.

Two years ago, legislation on car emissions was approved.

Improved public transport and an increase in pedestrianization to reduce car emissions.