many streets are cobbled and are classified as pedestrian zones. The city's roads are usually very crowded during rush hours, due to an increase in car ownership in recent years. Every day, there are more than one million vehicles travelling within the city limits. This has resulted in wearing of the upper layer of tarmac on many of roads in Bucharest, particularly secondary roads which are now used in an equal amount, this being identified as one of Bucharest's main infrastructural problems. The pothole problem is notorious enough to have inspired a song by the band Taxi with a chorus "Cratere ca-n București, nici pe luna nu gaseşti!" ("Craters like in Bucharest you won't even find on the moon"). However, in recent years, there has been a comprehensive effort on behalf of the City Hall to boost improvement of road infrastructure, mainly by resurfacing and widening roads, and repairing footpaths. Faulty urban planning will likely lead to an increase in traffic and parking problems, since new housing areas are built with houses and apartment buildings literally squeezed into existing small grid roads, a problem commonly identified in the "suburbs" of the city. Bucharest is one of the principal junctions of Romania's national road network, which links the city to all of Romania's major cities as well as to neighbouring countries such as Hungary, Bulgaria and Ukraine. Furthermore, the city is the starting point of the A1 motorway, towards Pitești, the A2, linking the capital with the country's ports and seaside resorts on the Black Sea and the A3, towards Ploiești. Airports Bucharest has one international airport: Henri Coandă International Airport, located north of the Bucharest metropolitan area, in the town of Otopeni, Ilfov. Currently the airport has one terminal divided into three inter-connected buildings (International Departures Hall, International Arrivals Hall and the Domestic Flights Hall – at the ground level of the Arrivals Hall). The International Departures Hall consists of 36 check-in desks, one finger with 10 gates (5 equipped with jetways), while the Domestic Hall has an extra four gates. Today's International Arrivals Hall is the old Otopeni terminal, while the new Departures Hall, including the finger and the airbridges was built and inaugurated in 1997. A second finger with 7 jetways is under construction and a new building terminal on the east side is in project phase. The airport received 8,317,168 passengers in 2015. It is accessible by