Roads

Roads connect everything in the settlement: Buildings, Peeps, and Resources. The settlement begins with a few roads surrounding the Home Spaceship, then the road network expands to reach nearby Forests, resource deposits, and new buildings.
Peeps walk quickly on roads. They will cross tiles without them if it is faster than going around, but they walk much more slowly through these tiles.
Requirements

Roads are free and instant to build and demolish. Every Building must be built with a road connection, and when placing new buildings, the connection is highlighted.

Roads can ascend or descend one level at a time via simple stairs, which will be built automatically with the road. Farther vertical distances require Elevators. Roads cannot end in water tiles or in the air. They must be able to span the gap within the maximum distance of a Wooden Bridge. Both the Elevator and Wooden Bridge require Resources and construction time.
Roads can only be built connecting to other roads. However, because roads can be demolished, it is possible to have isolated road networks. Peeps will walk between disconnected networks if there is no other or faster way, but they walk much more slowly on unpaved tiles.
Roads can only be built within breathable atmosphere.
Efficiency

Peeps a significant portion of their time walking between buildings—whether between their home and work or fetching Resources for their home or work. If the road network is inefficient, this is time not spent working, or they will not have sufficient time to relax between work shifts and be unable to recover their happiness or energy completely or not have time to get food or drink.


