SPIA alumna Dr. Huyen Le  of Ohio State University and Urban Affairs & Planning Professors Ralph Buehler and Steve Hankey, in collaboration and Dr. Yingling Fan of University of Minnesota, published "Expanding the positive utility of travel through weeklong tracking: Within-person and multi-environment variability of ideal travel time" in the April 2020 edition of Journal of Transport Geography.


  • This study quantifies the effects of various trip attributes on ideal travel time.
  • We employed a smartphone survey to repeatedly measure trips over 1–2 weeks per person.
  • Ideal travel time was longer for leisure trips and trips by foot and bicycle.
  • Talking and sightseeing during trips are associated with longer ideal travel time.

Read the full study.