21.   A parking lot where diesel buses idle at the base of towering Yosemite Falls will be converted into a picnic area.

22.   Fleets could continue to operate existing diesel buses and trucks.

23.   Ironically, diesel tour buses are a major culprit.

24.   Older diesel buses will be retrofitted to include continuously regenerative traps -- a device that captures and burns pollutants before emission -- and to use ultra-low sulfur fuel.

25.   Zero-emission buses currently cost about twice as much as diesel buses, and large quantities are not being produced.

26.   Jaswant Singh, president of the Federation of Transport Union Congress, said all diesel buses had been taken off the roads in accordance with the court order.

27.   Operators said vehicle makers in India were also not in a position to manufacture enough CNG buses to replace the entire fleet of diesel buses quickly enough.