Measuring pedestrian friendliness of cities

A walkable neighborhood is one that is designed with streets for all types of transportation. You can walk to shops and schools as well as parks and public spaces. Therefore, the Walk Score measures the walkability of any address using a patented system which analyses hundreds of walking routes to nearby amenities. It calculates the distance to the closest of each of facilities and calculates a linear combination of these distances weighted both by facility type priority and a distance decay function.
90–100 = Walkers’ Paradise: Most errands can be accomplished on foot and many people get by without using a car.
70–89 = Very walkable: It’s possible to get by without driving.
50–69 = Somewhat walkable: Some stores and amenities are within walking distance, but many everyday trips still require a bike, public transportation, or car.
25–49 = Car-Dependent: Only a few destinations are within easy walking range. For most errands, driving or public transportation is a must.
0–24 = Car-Dependent (Driving Only): Virtually no neighborhood destinations within walking range.