School buses and diesel exhaust

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Diesel exhaust

Diesel exhaust is a mixture of air pollutants including gases, particles and other chemicals. Some pollutants in diesel exhaust can affect your health. These pollutants include:

The content of diesel exhaust can depend on engine type and operating conditions.

Health effects of diesel exhaust

We published a report on the health effects of diesel exhaust.

The report shows that diesel exhaust can contribute to increased:

Diesel fuel exhaust can also contribute to:

Diesel exhaust and school buses

School buses are considered a safe way to transport children. Many children in Canada rely on school buses to take them to and from school. For example, in Ontario, 79% of students take a school bus to get to school.

School buses that run on diesel fuel are widely used in Canada. Diesel exhaust from school buses can contribute to poor air quality:

Children can be more sensitive to the effects of air pollutants including those from diesel exhaust because:

Children with asthma are especially vulnerable.

Some studies have shown that children exposed to diesel exhaust have an increased risk of developing asthma.

What we are doing about air pollution from diesel exhaust

We have introduced stricter regulations to reduce air pollutant emissions from diesel-powered vehicles. Decreased emissions resulting from these regulations are mainly due to:

How to decrease risk for children in school buses and around schools

You can help decrease how much children are exposed to diesel fuel exhaust:

Bus drivers can:

Schools can change the timing of their ventilation system so that large air intakes are decreased during rush hour and pick up and drop off times.

To help decrease pollutants from diesel school buses, school transportation providers can use new technologies like:

Contact us

If you have questions about diesel exhaust from school buses, contact us at:

Email: hc.air.sc@canada.ca
Telephone: 1-833-223-1014 (toll free)

For more information

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