But there's concern the buses will actually dirty the air. The DART Board plans on buying 160 new diesel buses. DART says they'll be better than the old ones currently on the streets. DART says the new ones are clean diesel buses, but environmental groups say there's no such thing. Air quality is a big concern in North Texas.
Many people say they're tired of driving along side dirty trucks and buses.
According to many people in the industry there is no such thing as clean diesel. But DART officials believe they've found an answer to dirty diesel guzzling buses. They plan on purchasing 160 clean diesel buses. They say the buses will have better engines and will burn cleaner fuel. But environmental groups say the buses will still pollute the air.