Scientists plan to melt moondust to make lunar roads. Astronauts may have to do more moon-driving than moon-walking during future missions.::If we want space missions to be successful, we need to build Moon roads. Scientists plan to use lasers and moondust - here’s how.
Honestly the number of people required to send is zero, because they’re for vehicles and it isn’t a strict requirement that they have humans in them.
As long as there is “stuff” that needs transporting, you’ll want vehicles, and if you want vehicles you probably want roads.