LegionnairE
SENIOR MEMBER
- Joined
- Apr 18, 2010
- Messages
- 7,140
- Reaction score
- -4
- Country
- Location
@Kaan, I just said elevated rails are cheaper. Building steel construction with five meters off the ground is much cheaper than digging 10-15 meters with a huge drill. But we need all three vertical layers of transportation; surface, above the surface, below the surface. So far we haven't used the cheaper "above the surface"