To begin with, building roads is a complicated process that requires intensive infrastructure development. This is mainly because road construction is a long-term process that involves intensive labour, expansion of roads, and disrupts public life. Therefore, such development causes traffic problems, and inconvenience to public. However, investing funds to increase the number of buses, and trains will not impact public lives. Furthermore, reliable and efficient public transport reduces the problem of congestion in city regions. For instance, in India, the local government has invested funds on public transport system, which has lead to a reduction of traffic by 30% in urban regions.