Taxi cabs have a pale yellow color. You can stop one on the street if the light on the cab’s roof is lit or go to the nearest taxi stand. A taxi ride is relatively expensive in Germany. Therefore, taking a taxi might only make sense in exceptional cases, e.g. if you miss the last train or bus at night or if you have a lot of luggage with you. Here are some Berlin taxi companies:
Short Distance € 3.50 for up to 2 km
The short distance rate is only available if you stop a taxi on the street. It is not valid when calling a taxi by phone or getting into a taxi at a taxi stand. Furthermore, you have to tell the driver beforehand that you want to use this rate. If the distance exceeds 2 km, the rate will automatically switch to the normal rate.