| Variables | Mean | Median | Maximum | Minimum | Std. dev. | Observations |
|---|---|---|---|---|---|---|
| Daily traffic volume | 11,490 | 9,460 | 63,741 | 1,689 | 8,821 | 1,135 |
| Toll (euros per km)1 | 0.091 | 0.086 | 0.224 | 0.037 | 0.035 | 1,135 |
| Gasoline price (euros per liter)1 | 0.619 | 0.533 | 0.867 | 0.486 | 0.139 | 18 |
| GDP (millions of euros)1 | 219,311 | 230,277 | 275,869 | 174,149 | 33,619 | 18 |
| Section length (kms) | 14.7 | 13.9 | 43.0 | 2.0 | 8.2 | 72.0 |
1 The base year for variables expressed in monetary units is 1992.