| Years | SDI | SEI | CES |
Motorway D1 | 1949 | 1.42 | 0.55 | 1.198 |
1988 | 1.70 | 0.66 | 0.373 | |
2007 | 1.98 | 0.77 | 0.476 | |
Motorway D3 | 1949 | 0.98 | 0.41 | 1.244 |
1984 | 0.92 | 0.38 | 0.127 | |
2007 | 1.42 | 0.54 | 0.165 |