Traffic, although there are many meanings, often defined as a way from one place to another. It is most commonly carried out through road and vehicles that run by them. The construction of the road can be monitored all of the mesopotamia, up to the present day. They changed the ways of making roads, but not their purpose. Roads and road traffic have always been important for people and the economy. By rapid development of contemporary traffic, road traffic has an increasing impact on the environment in which people live. Due to the construction of fossil fuels, road vehicles in the atmosphere releases hydrocarbons, nitrogen oxides, soot and aerosol. Road traffic also causes noise, vibration and is increasingly wider in natural habitat and so occupies space. In order to reduce the impact of traffic on the environment, the European Union has adopted several directives aimed at reducing pollution that causes traffic and encouraging the use of renewable energy sources as driving solutions for vehicles. In order to reduce the environmental impact, the concept of "Smart City" is applied to the City of Zagreb, which refers to the introduction of electric vehicles in public transport. The Spin City service is also available, which has electric cars in its offer.