Transport in Turkmenistan includes such as roadways, railways, airways, seaways, waterways, oil, gas and water pipelines. The transport and transportation infrastructure in Turkmenistan are the fasted developing sectors of the national economy. In 2001 Turkmenistan had an estimated 22,000 kilometers of roads, about 18,000 kilometers of which were paved. One major highway runs westward from Mary, along the Iranian border through Ashgabat and then to Turkmenbashi on the Caspian Sea; a second runs northwestward from the Afghanistan border through Turkmenabat, along the Uzbekistan border to Dashoguz. In the early 2000s, major road-building projects improved sections of the highway connecting Ashgabat with Balkanabat, Bereket, Turkmenbashi and Mary.