Separating Influences of Land Use and Transportation

The access changes experienced in 2023 reflect changes in both transportation (travel times by auto and transit) and land use (locations of workers and jobs). By varying these inputs individually against the common baseline of 2022, it is possible to get a sense of how much influence they each have on the overall change in job access. For example, combining 2022 travel times with 2023 jobs provides a counterfactual indication of how access would have changed if job and worker locations had changed while travel times remained static. And in the converse, using 2023 travel times with 2022 job destinations, provides the counterfactual indication of how access would have changed strictly due to the transportation network.

Decomposition of accessibility change method, 2022-2023