Electric cars form nowadays a competitive alternative to conventional cars with combustion engine. Unfortunately, there is still the problem of a relatively short range electric cars are able to reach which makes it quite unattractive to costumers. Many research projects deal with this issue to increase the range by following different approaches. E-City-Routing is one of those projects aiming to develop an energy-efficient routing algorithm especially for urban areas with its test field in Dresden, Germany. Thereby not only vehicle- and infrastructure-related impact factors are considered. Also dynamic traffic data provided by the local traffic management center such as current traffic situations and traffic signal states are taken into account in order to route electric cars with a minimum energy consumption through the city.