roads.
avoid traffic by choosing quieter streets to walk along.
shut your windows if you live next to a busy road and the traffic is bad.
play in parks! trees and plants clean the air and keeping fit and healthy is good for your lungs. i did...using a coupon, of course! i highly recommend searching for "free" deals/coupons. there are a ton of them out there!
depending on the quality you want and/or size, you can either save the picture to you computer or click here or on the image to get a full size copy of this print. 