The measures taken by EPA have and will continue to substantially improve air quality.
This is true of mobile source air toxics [[MSATs) and the criteria pollutants for which
there are national standards. National air quality trend data assume that vehicle miles
of travel will continue to grow at current rates. In spite of such travel increases, airpollution emissions will fall. They will more than fall in Detroit where background traffic
levels are expected to grow less. The SEMCOG forecast of a loss of jobs and
population through 2015 in the region will result in minimal traffic growth. Further,
national projections assume the basic vehicle fleet mix will not change. But, it is likely
that the fleet mix will change to more fuel-efficient and less-polluting vehicles, such as
hybrids, further improving conditions. At the local level, air quality in Mexicantown near
the Ambassador Bridge will improve with completion of the Ambassador Gateway
Project in 2009. International truck traffic will be eliminated from this local area by the
direct connection of the Ambassador Bridge with I-75.


So, does anyone have any thoughts on this?