Child care centres and car exhaust - A dangerous mix

Library Home  >  Health, Wellbeing & NutritionSustainability
  Published on Saturday, 02 October 2010

Child care centres and car exhaust - A dangerous mix

Library Home  >  Health, Wellbeing & NutritionSustainability
  Published on Saturday, 02 October 2010
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This week research by Clare Walter, Dr Elena Schneider-Futschik, and Associate Professor Louis Irving, from University of Melbourne finds many inner Melbourne child care centres are built close to busy roads, putting children near dangerous vehicle exhaust and highlighting the need for buffer zones. This is an opinion piece reproduced with permission from Pursuit.

There is increasing evidence internationally, and within Australia, linking a higher risk of asthma and allergies with exposure to traffic-related air pollution.

While there are no safe thresholds for exposure to traffic pollution, research has found the health risk is highly correlated with the extent of exposure, and children are particularly vulnerable to traffic-pollution exposure as their lungs are still developing and they often spend more time outside than adults.

Major statistical analysis of past studies in 2012 and 2015 have found that increased exposure to exhaust pollution increases the incidence of childhood asthma.

The 2015 study found that every two microgram per cubic metre incremental increase in chronic exposure to particulate matter from car exhausts in early childhood increased the risk of developing asthma in later childhood by 14 per cent.

With that in mind, how close do you want your child's early childhood centre to be to a busy road?

Using the Australian Urban Research Infrastructure Network's spatial database, which collates information on Australia's cities and towns for mapping and analysis, we mapped the locations of inner Melbourne's 278 child care centres.

We found that 29 centres, or more than 10 per cent, were located within just 60 metres of busy roads with a daily traffic volume of at least 20,000 cars a day. Some of these busy roads near child care centres have well over double that load of traffic.

Given the emerging evidence, as health researchers, we think this is simply much too close for comfort.

But there are no standards or guidelines in Victoria on how far from major roads child care centres should be located.

Compare that with California, where guidelines have successfully reduced the exposure of children to exhaust fumes. The California Air Resources Board recommends new schools be built no closer than 150 metres (500 feet) of a major road, defined as a road carrying over 50,000 vehicles a day.

An extreme example of how close some child care centres are to busy roads in Melbourne is my own child's centre, which is situated just 15 metres from the busy eight-lane Hoddle Street road.

An independent assessment of air quality at this centre in 2014, funded by the local council and accessed under Freedom of Information laws, found that over the three months from April to June, the fine particulate matter in the air (which can penetrate the lungs) averaged 11.4 micrograms per cubic metre.

That compared with the Victorian Environmental Protection Agency (EPA) annual standard of no more than eight micrograms.

In addition, it recorded two instances where the EPA’s hourly threshold standard of 25 micrograms was exceeded at 28.4 and 37.8 micrograms.

A new child care centre is now being planned in Yarraville. Situated in Melbourne's inner west, Yarraville lies between container yards and the Port of Melbourne.

Consequently, an estimated 20,000 trucks pass through its streets daily, and previous EPA monitoring has found that roadside pollutants exceed air quality thresholds.

The area also has the highest rates in Victoria of children presenting with respiratory disease at hospital emergency departments.

This new centre will be situated on an intersection that will leave the children's second floor, open-air play area just four metres from where 4,650 trucks pass daily.

We can and should be doing better than this.

In California, over the last 20 years, polices have reduced the exposure of children to exhaust pollution, and these reductions have been shown to be correlated with significant improvement of lung function.

Importantly, these health benefits can be expected to extend into adulthood, reducing the risk of later cardiovascular disease.

Our policy makers need to be implementing mitigation strategies that match the best practices in California, including ensuring adequate buffer zones for child care centres.

Other strategies include:

  • Improving indoor ventilation and filtration
  • Imposing anti-idling restrictions
  • Installing road side barriers
  • Designing play areas away from exhaust pollution movements
  • Structure outdoor play for out of peak traffic hours
  • Encourage cycling and walking as opposed to driving to school and child care

The monitoring of air quality near child care centres and schools also needs to be improved. Current official monitoring network only measures 'background' levels of air quality when much more specific area monitoring is needed.

This is something that schools and child care centres can now readily do themselves given the rising number of low-cost monitoring devices now available.

Lung health and development in children has lifelong consequences.

Health professionals must play an active role in raising public awareness and advocating for greater consideration of children's lung health in child care centres.

Australia's Australia's National Environmental Protection Measures is underpinned by the objective that "all Australians enjoy the benefit of equivalent protection from air pollution", but until we follow international examples and actively seek to reduce children's exposure to traffic pollution, we will fail our most vulnerable members of society.

This article was first published on Pursuit. Read the original article.

This child care article was last reviewed or updated on Monday, 30 December 2019

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