New York City's plan to turn its whole fleet of yellow cabs green by 2012 got the red light this week from a federal judge, who ruled that regulation of fuel emissions standards falls under federal authority.
The plan called for every new taxi to have a standard of least 30 miles per gallon — a benchmark met by hybrid and clean diesel cars.
US District Judge Paul Crotty said enforcing the new regulations now would be costly to the taxi industry, which prompted Mayor Michael Bloomberg to release a statement saying the city is considering an appeal.
Green taxis are a focal point of Bloomberg's environmental plan. There are currently about 1,400 hybrid taxis in the city.