Denizli is not a very big city. You won't need to use the transportation system very often. Minibuses and buses provide service. There is neither metro nor trams running. Just rely on your foot as the center of the city is so small. If you want to go to the outskirts of the city you can take buses. Every bus has a sign on it stating where it goes and terminates. You can try to ask the driver as well.
