Research Article
Alternative Model to Determine the Optimal Government Subsidies in Construction Stage of PPP Rail Transit Projects under Dynamic Uncertainties
Table 3
Unit social cost of various modes of transportation.
| Transport (yuan/person • km) | Bus | Bicycle | Taxi | Subway | Light rail |
| Own costs | 0.144 | 0.0105 | 0.393 | 0.375 | 0.125 | Road occupancy costs | 0.01 | 0.061 | 0.11 | 0 | 0 | Parking costs | 0.00736 | 0.0526 | 0.0092 | 0 | 0 | Traffic accident damage costs | 0.0012 | 0.006 | 0.007 | ≈0 | ≈0 | Environmental costs | 0.121 | 0 | 0.175 | 0.00966 | 0.0126 | Time value | 0.867 | 1.079 | 0.325 | 0.325 | 0.325 | Summation | 1.151 | 1.209 | 1.019 | 0.71 | 0.463 |
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