Accessibility is one of the key measures of urban transportation planning. However, this measure is usually quantified in a rather standardized way. In order to make it more flexible and robust, we used the concept of the 6-minute walking distance (6MWD) to measure accurately the walking ability for different groups of the population. The proposed tool was applied to the case of the Porto Metropolitan Area.
https://www.sciencedirect.com/science/article/pii/S2352146521000442