Research Article
Exploring Built Environment Influence on Taxi Vacant Time in Megacities: A Case Study of Chongqing, China
Table 1
Descriptive statistics of the variables.
| Variables | Description | Min | Median | Mean | Max | Std. Dev. |
| TVT | Taxi vacant time of grids (min) | 0.25 | 7.75 | 53.53 | 3397.50 | 120.98 | DSR | Road density of grids (km/km2) | 0 | 6.52 | 7.09 | 22.01 | 4.04 | BSN | Number of bus stops in grids | 0 | 2 | 2.35 | 16 | 2.44 | MET | Presence of metro stations within grids | 0 | 0 | 0.12 | 1 | 0.33 | TFS | Average traffic flow speed (km/h) | 0 | 25.42 | 31.36 | 120.00 | 22.58 | LON | Longitude of the center of grids | 106.30 | 106.50 | 106.50 | 107.00 | 0.11 | LAT | Latitude of the center of grids | 29.13 | 29.58 | 29.58 | 30.10 | 0.12 | PMT | POI mixture | 0 | 0.85 | 0.73 | 1.00 | 0.32 | CAT | Number of catering service POIs | 0 | 2 | 17.78 | 498 | 43.38 | SNS | Number of scenic spot POIs | 0 | 0 | 1.20 | 57 | 3.58 | ENT | Number of enterprise POIs | 0 | 3 | 7.71 | 223 | 16.65 | SHP | Number of shopping service POIs | 0 | 5 | 37.16 | 1368 | 102.19 | FAI | Number of finance and insurance service POIs | 0 | 0 | 3.14 | 111 | 7.94 | SAE | Number of scientific, culture, and education POIs | 0 | 2 | 7.97 | 149 | 16.18 | MVS | Number of motor vehicle service POIs | 0 | 1 | 3.78 | 319 | 12.21 | LFS | Number of living service POIs | 0 | 3 | 18.88 | 527 | 42.10 | SLE | Number of sports and leisure service POIs | 0 | 1 | 6.92 | 191 | 15.64 | HCS | Number of healthcare service POIs | 0 | 1 | 8.41 | 158 | 15.89 | GOV | Number of governmental agency POIs | 0 | 2 | 7.32 | 181 | 14.71 | HTS | Number of hotel service POIs | 0 | 0 | 3.89 | 230 | 12.68 | MLB | Number of multiple-living building POIs | 0 | 0 | 1.03 | 43 | 3.41 | RES | Number of residence community POIs | 0 | 2 | 6.33 | 88 | 9.31 |
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