Currently almost all roads are illuminated in the night, while in Spain only a few ones are, and most likely only in areas close to cities. In real life It is very rare to find illuminated roads any farther than 10 km from any city.
Please keep illumination only for main roads and close to cities to gain realism. If this is too complex you better desable it completely, it will look much closer to real life.
Thank you!
Javier