A lot many studies point out that the compact urban form has a high (or higher) urban density especially at core or centre or CBD of the cities.... is it just the urban density that make a city compact or there are some important factors that shall also be considered to call a city Compact? Is compact city just a relative notion or a referral concept with respect to the sprawling cities? Because the concept of high density in itself is relative.... as a high density in US & Europe may be normal or low density in developing countries like India.