Table 5 Description and descriptive statistics of variables.
Variables | Description | Descriptive Statistics (N = 150,121) | |||
|---|---|---|---|---|---|
Mean | S. D. | Min | Max | ||
Dependent Variables | |||||
CAR | Difference between actual and minimum travel distances for car trips (in kilometers) Note: Dependent variable of Model 1 | 6.6 | 7.3 | < 0.01 | 50.0 |
PT | Difference between actual and minimum travel distances for public transportation trips (e.g., bus and transit, in kilometers) Note: Dependent variable of Model 2 | 5.3 | 7.0 | < 0.01 | 49.0 |
AT | Difference between actual and minimum travel distances for active transportation trips (e.g., walking and biking, in kilometers) Note: Dependent variable of Model 3 | 5.7 | 7.0 | < 0.01 | 50.0 |
Independent Variables | |||||
Origin | |||||
Density | Factor 1 of origin derived from EFA, represents urban density, where a higher density indicator corresponds to greater urban density | < 0.01 | 1.1 | -1.10 | 9.4 |
Accessibility | Factor 2 of origin derived from EFA, represents transportation accessibility, where a higher accessibility indicator is associated with greater distances to downtown, bus stops, and schools | < 0.01 | 1.1 | -0.91 | 28.0 |
Design | Factor 3 of origin derived from EFA, represents urban design, where a higher design indicator reflects greater land-use diversity and a higher compactness index | < 0.01 | 1.1 | -3.40 | 8.9 |
Destination | |||||
Density | Factor 1 of destination derived from EFA | < 0.01 | 1.1 | -1.10 | 9.2 |
Accessibility | Factor 2 of destination derived from EFA | < 0.01 | 1.1 | -0.87 | 28.0 |
Design | Factor 3 of destination derived from EFA | < 0.01 | 1.1 | -3.30 | 9.0 |
Route Characteristics | |||||
Time | Average travel time of a route (in minutes) | 37.0 | 28.0 | 1.0 | 297 |
Distance | Straight-line distance of a route (in kilometers) | 5.7 | 5.8 | 0.3 | 69 |
Volume | Total traffic volume across all transportation modes for a route | 8.4 | 82 | 1.0 | 6,930 |
Spatial-temporal Variables | |||||
Weekend | Indicates whether the travel occurs on a weekend (1 if yes, 0 otherwise) | ||||
H3_O | H3 indicators of the origin of a route | ||||
H3_D | H3 indicators of the destination of a route | ||||