Clogged arteries and clogged roads.
Roberts
W C
WC
D000063:Accidents, Traffic / Q000401:mortality* / Q000517:prevention & control; D001334:Automobile Driving / Q000706:statistics & numerical data*; D004787:Environmental Pollution / Q000517:prevention & control; D006801:Humans; D013997:Time Factors; D014186:Transportation / Q000191:economics; D014481:United States