| Vehicle | Brand | Year | Low Rotation | Low Rotation | High Rotation | High Rotation | |
| NO2 (ppmv) | SO2 (ppmv) | NO2 (ppmv) | SO2 (ppmv) | ||||
| 1 | Bus | Mercedes | 1980 | 624 | 307 | 761 | 300 |
| 2 | Bus | Mercedes | 1981 | 359 | 280 | 669 | 354 |
| 3 | Bus | Mercedes | 1985 | 619 | 299 | 636 | 259 |
| 4 | Bus | Mercedes | 1989 | 657 | 301 | 868 | 362 |
| 5 | Bus | Mercedes | 2001 | 187 | 93 | 364 | 155 |
| 6 | Minibus | Iveco | 2003 | 4 | 9 | 6 | 9 |
| 7 | Bus | Mercedes | 2006 | 239 | 249 | 244 | 253 |
| 8 | Bus | Mercedes | 2006 | 268 | 172 | 330 | 191 |