Singapore is an urbanised city State. It has a land area of 715.8 square kilometers and a dense population of about 5.31 million. About 13% of the total land area is devoted to roads. The road network is highly urbanised, with 161 km of expressways, 652 km of arterial roads, 561 km of collector roads and 2,051 km of local access roads. The road infrastructure is well developed and well maintained, including the provision of lighting on every public road. Compared with many developed countries, car ownership is low because of usage demand management and other controls. The vehicle fleet is modern. Motorcycles comprise about 20% of all motor vehicles.