Table 1 Impacts of TNCs on congestion

From: Impacts of transportation network companies on urban mobility

Dependent variable log(TTI) log(CH)
(1) Model 1 (2) Model 2 (3) Model 1 (4) Model 2
  Estimate t statistic Estimate t statistic Estimate t statistic Estimate t statistic
Constant −0.7110 −7.349*** −0.7352 −8.005*** −2.6150 −4.969*** −2.3480 −4.385***
TNC 0.0089 3.400***    0.0449 2.966***   
Within 1 year of TNC entry    0.0043 1.426    0.0498 2.822***
Within 1–2 years of TNC entry    0.0075 1.678*    0.0487 1.881*
Within 2–3 years of TNC entry    −0.0006 −0.104    0.0764 2.256**
Within 3–4 years of TNC entry    −0.0021 −0.274    0.0904 2.019**
Beyond 4 years of TNC entry    0.0083 0.812    0.1931 3.224***
Two TNC operators    0.0032 1.205    0.0463 2.976***
Control variables Yes   Yes   Yes   Yes  
MSA fixed effect Yes   Yes   Yes   Yes  
Month fixed effect Yes   Yes   Yes   Yes  
No. of observations 2,640   2,640   2,640   2,640  
Adjusted R2 0.8600   0.8791   0.8399   0.8410  
  1. Significance codes: ***P < 0.01; **P < 0.05; *P < 0.1.