The new "Taxi Turvi" smartphone app allows users to track their route, shows what it determines to be the best routes and rates drivers, but taxi officials question whether the
Users press a start button at the beginning of their ride, then a stop button when they get to their destination.
The app maps the route the cab takes, shows a suggested best route, displays the distances and gives the driver a "wheels rating" along with a recommended tip.
Taxi and Limousine Commissioner David Yassky says the app might not take into account when cab drivers have a good reason to take a different route. He says cab drivers are knowledgeable about street closures, construction, weather and traffic conditions.
Currently, the app is only available for the iPhone.