Pastoral societies supported far smaller populations.
Pastoral societies generally lived in small and widely scattered and campement of related kinfolk.
None of the above! You can use the headlights even if the visibility is way under 1000feet. There are many countries especially in Europe where headlights/daylights must be always on with no regard to visibility conditions. In some cities you will be even given a fine for not having the lights on all the time. But rules vary from country to country...
