* The Dubai Metro is a driverless, fully automated metro network in the United Arab Emirates city of Dubai.Planning of the Dubai Metro began under the directive of Dubai's ruler Sheikh Mohammed bin Rashid Al Maktoum who expected other projects to attract 15 million visitors to Dubai by 2010. The combination of a rapidly-growing population and severe traffic congestion necessitated the building of an urban rail system to provide additional public transportation capacity, relieve motor traffic, and provide infrastructure for additional development. Japanese manufacturer Kinki Sharyo built a total of 87 five-car trains. They are designed to carry 643 seated and standing passengers, and unusually for a mass transit system, the trains have three classes of accommodation: Gold Class, Women and Children class, and regular Silver Class (economy).