Method of Producing and Using a Transit-time map

A method of using a digital mapping service to produce a transit-time map, wherein the digital mapping service provides as an output a digital spatial map and a time to travel between pre-selected points on the digital spatial map for a specified travel mode, comprising the steps of:

• a. providing a connected digital device;
• b. providing a digital transit-time mapping program and inputting a user-defined initial location, a pre-defined transit-time, and a user-chosen travel mode into said digital transit-time mapping program;
• c. running said digital transit-time mapping program, wherein said running said digital transit-time mapping program includes repeatedly accessing the digital mapping service to determine a locus of points on the digital spatial map, wherein said time to travel from the user-defined initial location to each point of said locus of points is substantially equal to said pre-defined transit time for the first user-chosen travel mode;
• and
• d. storing said points of said locus of points on the digital spatial map.