Air pollution continues to be a global health risk for consumers, contributing to tens of thousands of deaths in the U.S. in recent years. Though air pollution comes from several different sources, researchers have recently found that roadways with heavy traffic emit high levels of emissions that can be harmful to consumers’ health.
Now, a new study conducted by researchers from the University of Surrey suggests that there’s another way driving can contribute to health problems. Their work revealed that driving with the windows down increases the risk of air pollution exposure by 80 percent.
“The study has drawn important conclusions that can help commuters make decisions in their day-to-day lives to protect their health,” said researcher Abdus Salam. “Simple choices, like traveling during off-peak hours, can go a long way in reducing their exposure to air pollution.”
Risks of having the windows down
To understand the effects car ventilation can have on air pollution exposure, the researchers analyzed data from 10 cities around the globe. They were primarily concerned with how different types of car ventilation affected air pollution exposure, as well as how traffic at different times of the day could affect emissions levels.
They measured pollution levels in each of the cities at various times during the day and then assessed how ventilation and traffic patterns affected drivers’ exposure. The biggest takeaway was that driving with the windows down exposes consumers to 80 percent more air pollution than other forms of ventilation.
The researchers learned that rush hour driving was worse than quieter times on the road, though the risk for increased air pollution exposure was still present during any time the windows were down. Morning rush hour exposure yielded the worst results, as driving at this time with the windows down exposed drivers to over 90 percent more air pollution than having the windows down at off-peak times.
“To be blunt, we need as many cars as possible off the road, or more green vehicles to reduce air pollution exposure,” said researcher Prashant Kumar. “This is a distant dream in many [official development assistance] countries. Air-conditioned cars are unattainable for many poor and vulnerable commuters across the world, but our data is clear and coherent for all 10 participating cities.”
Use air conditioning if possible
Air conditioned vehicles are the best option for consumers to limit as much air pollution exposure as possible -- especially during times of high volume on the roads. However, as Kumar explained, this option isn’t a reality for many consumers around the globe.
Moving forward, the researchers hope that more work can be done in this area to better protect consumers from the risks associated with exposure to air pollution.
“We must now work with our global partners to make sure they have the information needed to put in place programmes, policies, and strategies to protect the most vulnerable in our communities and find realistic solutions to these serious problems,” Kumar said.