Indonesia is knowned as fourth-largest country in the world by population. As common habits of post-colonial nation, urban population continue to grow in size.Indonesia's urban population has hit 120 million. Bappenas has predicted, the number continues to grow to 152 million in 2025, 67.5% of population.Jakarta, as capital of the country, has population of 11 million at night and jump to 14 million at noon. In 2013, Jakarta has 4.1 million cars and 11.9 million motorcycles.According to Jason Pomeroy, award-winning architech and urban planner, Jakarta has to adopt mixed-use developments, as a key to urban problem.From ICT's view, Jakarta has to adopt smart city concept to make comfortable unvironment for forthcoming citizen. How smart city could solved urban problem in Jakarta? Read my other articles. . . .