The Metro, tram and trolleybus systems are used mainly by commuters as a primary means of urban transportation. Cycle lanes were introduced on main thoroughfares in July 2015. There are relatively few cars in the city. Cars are a symbol of status in the country due to their scarcity as a result of restrictions on import because of international sanctions and domestic regulations. Some roads are also reported to be in poor condition. However, by 2018, Pyongyang had begun to experience traffic jams.