Table 1 Dependent and Independent Variables
Table 1 Dependent and Independent Variables
Independent variables
| Category | Variable | Name |
|---|---|---|
| Number of accidents | The (log-transformed) number of accidents with persons killed or seriously injured | LNACCKSI |
| The (log-transformed) number of accidents with lightly injured persons | LNACCLI | |
| Number of casualties | The (log-transformed) number of persons killed or seriously injured | LNPERKSI |
| The (log-transformed) number of persons lightly injured | LNPERLI |
Dependent variables
| Category | Variable | Name |
|---|---|---|
| Laws and regulations | Law of June 1975 → mandatory seat belt use in the front seats |
Law0675 |
| Law of November 1988 → introduction of zones with a speed limit of 30 km/h |
Law1188 | |
| Law of January 1992 → a.o. speed limit of 50 km/h in urban areas and 90 km/h at road sections with at least 2 by 2 lanes without separation |
Law0192 | |
| Law of December 1994 → 0.5‰ blood alcohol concentration imposed and higher fines in case of 0.8‰ or higher |
Law1294 | |
| Law of April 1996 → a vehicle driver should give right of way to pedestrians who are (or have the intention to) crossing the street |
Law0496 | |
| Weather conditions | The quantity of precipitation (in mm) | Quaprec |
| The monthly percentage of days with precipitation | Pdayprec | |
| The number of sunlight hours | Hrssun | |
| The monthly percentage of days with sunlight | Pdaysun | |
| The monthly percentage of days with frost/freezing temperatures | Pdayfrost | |
| The monthly percentage of days with snow | Pdaysnow | |
| The monthly percentage of days with thunderstorm | Pdaythun | |
| Economic variables | The percentage inflation | Inflat |
| The (log-transformed) number of unemployed persons | Lnunemp | |
| The (log-transformed) number of car registrations | Lncar | |
| The percentage of second-hand car registrations | Poldncar |