Diao, M., Kong, H. & Zhao, J. Impacts of transportation network companies on urban mobility. Nat Sustain 4, 494–500 (2021)

Objective:

• How transportation network company (TNC) have changed urban mobility as measured by road congestion

Case:

• US, MSA

Methodology:

• Fixed effects model
  • IV: distance to the nearest TNC hub city
  • Robust: include non-TNC MSA and DID
• Temporal change
  • $y_{it} = \alpha + \beta_1 Year_1 +…+ \beta_n Year_n + \theta_i + \tau_t + \epsilon_{it}$

Data Source: partial open

• National transit database
• Federal highway administration
• Bureau of economic analysis
• American community survey

Findings:

• TNCs increased road congestion in terms of both intensity and duration
• TNC leads to a decline of PT ridership and reduce vehicle ownership

• The entry of the second TNC operator increased congestion hour

Coding Reference:

• Python 2020