| Form of Transportation | g·CO2/person·km |
| Passenger Car | 168.2 |
| Bus | 55.7 |
| KTX | 26.9 |
| Saemaeul Train | 66.4 |
| Mugunghwa Train | 42.3 |
| Seoul Area Subway | 26.5 |
| Subway | 25.9 |