Coal burning and diesel pickup trucks in Canada are a similar problem. If you've ever had a condo in downtown Calgary you quickly learn not to leave a window open for fresh air. Turns the linens grey. Hard to believe that in a country like Canada the cardiopulmonary effects are ignored. 

40 years invested in cleaning up the gasoline engine (used to be tetraethyl lead) with catalytic converters, and now  particulate spewing diesels are all over the road, damaging our's and our kids' health to save a few bucks. And departments Health Canada and Transport Canada (oxymorons) are silent.