Impedance measures in evaluating accessibility change

Shoman W., Demirel H.

GEOCARTO INTERNATIONAL, cilt.37, sa.12, ss.3642-3657, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 37 Sayı: 12
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1080/10106049.2020.1869327
  • Dergi Adı: GEOCARTO INTERNATIONAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Environment Index, Geobase, INSPEC
  • Sayfa Sayıları: ss.3642-3657
  • Anahtar Kelimeler: Travel impedance, travel time, dynamic impedance, accessibility
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Earlier location-based accessibility analysis by car mode utilizes network travel distance (NTD) or static travel time (STT) as travel impedances. A recent trend in the literature that considers impedance as dynamic travel time (DTT) emerged, allowing examining continuous accessibility patterns. This research aims to evaluate the measured spatial-temporal change in accessibility for the different travel impedances. The research develops a GIS-remote sensing framework to evaluate the resemblance in spatial and temporal accessibility change at high resolution. It also investigates the dominant impact of significant accessibility components on influencing their results. According to results, impedances of NTD and STT represent almost identical outcomes, with correlation coefficients almost equal to 1.00, while failing to capture the dominant change of accessibility components. However, DTT illustrates varying patterns highly influenced by change in mobility. It shows the interplay between dominant accessibility components at the required resolution, which could facilitate better knowledge-based decisions for policymakers.