When last time you have seen a road resurfaces work?
Image courtesy of the U.S. Geological Survey The USGS home page is http://www.usgs.gov.
When last time you have seen new tires replacing old one in your vehicle?
Ok had you know where all the particles torn out from your tire and road gone?
They are gone to the environment of the road and settled in the vicinity of the road.
Ok now if you are going to own or rent a home what you look mostly is access to the road
Anybody with just common sense could understand that whatever particles in the environment are; going to our breathing system; because of that we got cough, sneeze, sore throat, asthma, headache, and all the illness up to cancer.