Karachi is one of the most populated cities in the world, its population having risen from 250,000 to more than 15 million in the six decades since Pakistani Independence. Karachi constitutes ten per cent of the total population of the country. Uncontrolled influx of population from other parts of Pakistan has contributed to infrastructure, housing, and education problems. Furthermore, the city is an industrial and commercial hub with two major ports, causing even greater traffic pressure and pollution. One-third of the total vehicles in Pakistan are registered in Karachi.
