Transport in Bhutan uses about 8,000 kilometres (5,000 mi) of roads and four airports, three of which are operational and interconnected. Paro Airport is the only airport which accommodates international flights. As part of Bhutan’s infrastructure modernization programs, its road system has been under development since the 1960s. There are no railways (although one is planned) and, since Bhutan is a landlocked country without major waterways, there are no ports.There are taxis in Phuentsholing, Paro, Jakar and Thimphu. Taxis may have meters, but drivers rarely use them. For long-distance trips they operate on a flat rate that is rarely open to negotiation. Taxi drivers have a habit of charging foreigners, including Indians, as much as they can – one of Bhutan’s few rip-offs. There are no trains in Bhutan, with public transportation only available by bus service in districts where metalled roads exist. Buses are invariably crowded and uncomfortable, with poor road conditions making things worse. Bhutan Post Express and Dawa Transport are two of the many local firms which offer minibus services, or Karma Transport and Leksol Bus Services use the comfortable Toyota Coasters, a better bet for longer journeys.