Communities can adopt any of several methodologies for creating a connectivity index. By establishing a requirement for the numbers of intersections relative to the total amount of new road construction, a connectivity index insures a level of interconnectedness without specifying block sizes or configurations (see Handy, Paterson, and Butler, 2003, PAS Report No. 515, APA).
![Source: RPA](http://www.designyourtown.org/wp-content/uploads/2015/01/RPA_Details-Links-L14-Connectivity-Calculations.jpg)