The negative health outcomes in this study correlate well with those found in lead poisonig studies. Enormous quantities of lead were deposited along our roadw

The negative health outcomes in this study correlate well with those found in lead poisonig studies. Enormous quantities of lead were deposited along our roadways over a period greater than 50 years. It would be very difficult to decouple "transport noise" from the lead pollution that is known to exist along those transport routes. https://en.wikipedia.org/wiki/Tetraethyllead https://en.wikipedia.org/wiki/Tetraethyllead https://www.pbs.org/wgbh/nova/article/herbert-needleman/ https://www.pbs.org/wgbh/nova/article/herbert-needleman/ https://en.wikipedia.org/wiki/Thomas_Midgley_Jr https://en.wikipedia.org/wiki/Thomas_Midgley_Jr.