..."drivers?" I think it`s a general term that covers all of that. But I may be wrong.I am aware motorists are car drivers. However, in our newspapers, lorry drivers and drivers of other vehicles, including motorcyclists, are included as motorists. How do natives classify all the drivers, including motorcyclists, as one group?
It would help to have an example sentence and context of why they are grouped together. Motorized vs not motorized? License to drive vs no license needed? There may be no simple solution.