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A spatiotemporal disparity of transit and automobile access gap and its impact on transit use

Author

Listed:
  • Fatemeh Janatabadi
  • Sanju Maharjan
  • Alireza Ermagun

Abstract

This research empirically evaluates the access gap between transit and automobile to examine the extent of auto-access-orientation within and between the 50 American Metropolitan Areas. The Modal Access Gap (MAG) index is calculated over space and travel time to test three hypotheses: (1) MAG is a function of space and travel time, (2) MAG is CBD-centric, and (3) MAG is associated with transit use. Results indicate that (1) MAG merely possesses negative values ranging between −0.98 and −0.79, regardless of the travel-time thresholds or metropolitan areas, and the travel time lag between transit and automobile ranges from 35 minutes in New York to 51 minutes in Riverside for a 60-minute commute, (2) MAG decreases as one moves away from the central area, and (3) a 1% increase in MAG increases transit use by 1.37% on average.

Suggested Citation

  • Fatemeh Janatabadi & Sanju Maharjan & Alireza Ermagun, 2023. "A spatiotemporal disparity of transit and automobile access gap and its impact on transit use," Environment and Planning B, , vol. 50(7), pages 1858-1878, September.
    • Handle: RePEc:sae:envirb:v:50:y:2023:i:7:p:1858-1878
    DOI: 10.1177/23998083221147527
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