Metropolitan Accessibility Indicator - exploring potential markets

The indicator map shows for each point the travel-time from every position to a defined point in the city. This indicator can be used as proxy for market potential when it is accompanied by the total number of persons that can be reached from the defined point within a given amount of time. Typically, the indicator is calculated from i) the road network, railway network, waterway network and their capacity, ii) topography (terrain roughness), iii) land cover and iv) barriers, such as rivers.