Most of the asian systems used one-off train designs made specifically for that project. They're aluminum boxes with LIMs and bogies ordered from other suppliers.

Bombardier seems to be the only one with heavy standardization [[the only reason their current Mark 3s are so long is because they standardized the bodies across several propulsion technologies). But for JFK they made unique wide versions to slightly increase capacity even though they had just come out with their new Mark 2s. If it was such a burden, they wouldn't have.


The only limiting factor to expanding the People Mover is the raw cost of elevated guideway.