NEW YORK (AP) – New York City transit officials are showing off a blue double-decker bus that will run in a monthlong trial.

Double-decker buses haven’t been used on city streets regularly since 1953. They may be brought back because they’re more fuel efficient than regular buses and carry more passengers.

A bus is on loan from the ABC Bus Co. The city may buy some if the trial goes well. The double-decker buses cost $650,000 each, compared to $900,000 for current city buses.

Starting Thursday, the bus will alternate service on local and express bus routes: the BxM3 from Yonkers to Manhattan, the X17J between Staten Island and Manhattan and the M15 on First and Second avenues in Manhattan.