The best way to improve air quality is to make our roads safer, a new study says.
The National Academy of Sciences published the findings Tuesday, which suggest that improving the efficiency of traffic cameras could provide the best path to cleaner air.
The study, “Transportation Surveillance: A Case Study of the Effectiveness of Traffic Cameras in Air Quality,” was authored by two researchers at the University of Maryland and the University at Albany.
They found that the devices reduce air pollution by detecting cars, trucks and buses and measuring traffic flow through intersections.
The research was done for the National Academy’s Road and Transportation Safety Research Group, which was formed in 2011 to evaluate traffic camera technology for improving air quality.
It was funded by the National Science Foundation, the National Institute of Standards and Technology, the U.S. Department of Transportation, and the Department of Homeland Security.
The results showed that traffic cameras improve air pollution for drivers and pedestrians alike.
The researchers measured air pollution from vehicles traveling in intersections around the country, with the cameras in use from September 2009 through December 2013.
Their data showed that drivers and walkers are less likely to be distracted by the cameras when they are in use.
The scientists found that using traffic cameras reduces the likelihood of drivers and pedestrian accidents, and that pedestrians are more likely to see the cameras if they are not in a traffic-congestion-sensitive area.
The results were similar if the traffic cameras were not operating during the daytime.
While the researchers say that traffic camera use is likely a useful tool for reducing air pollution, the results of their study are limited because the devices themselves do not track traffic, and therefore cannot determine if a driver or pedestrian is moving into an intersection or not.
The findings are also limited by the fact that some intersections are not required to have traffic cameras.
The researchers suggest that if more intersections were required to use traffic cameras, the effect would be greater.
“In the absence of a comprehensive and timely implementation plan, it is unclear how the effects of traffic camera enforcement on traffic-related health would be quantified,” the researchers wrote.
While traffic cameras may help protect public health, they also may cause some problems for drivers.
According to the National Highway Traffic Safety Administration, about a quarter of all collisions in the United States involve the use of a car or pedestrian.
The study found that drivers were far more likely than pedestrians to cause a collision if they were distracted or driving in an area that is heavily used by pedestrians.
The NHTSA says that the number of people killed in car accidents is about 15 times higher than the number killed in pedestrians.