The notion of "time-space prism"

The "time-space prism" is a concept in geography and transportation that illustrates the set of locations a person can reach within a specific time frame, considering their starting point and the available transportation options. It combines space (where someone can go) and time (how long it takes) into a visual shape, showing the maximum extent of mobility. Essentially, it helps us understand the potential movement and accessibility someone has within a given period, reflecting factors like travel speed and distance, and how these influence personal or goods movement across a landscape.