Updated: 11:24 p.m. Monday, March 16, 2009 | Posted: 11:05 p.m. Monday, March 16, 2009
PITTSBURGH —
Local groups including The Group Against Smog and Pollution and Clean Water Action are behind the movement to retrofit school buses to reduce diesel emissions.
The W. L. Roenig bus company retrofitted 50 buses last month.
Now the Healthy School Bus Campaign is fighting for a policy that would require all buses used in the Pittsburgh Public School System to go through a retrofitting process.
Experts say diesel particulates inside the bus are 5 to 10 times higher than outside the bus.
Retrofitting the buses could reduce diesel pollution by 90 percent.