India has a wide-spread infra-structure although it is in poor condition especially in remote regions. The use of buses is very popular for all classes of society. They are a cheap and easy mode of transport. The demand for cars in India is one of the highest in the world, which causes massive traffic jams on major roads at peak hours. India's rail network is the longest of any country, but it is in poor condition and service is slow and unreliable. India has an extensive network of domestic and international airports.