I don’t think the needs of the riders are predictable. Large upfront costs and static design routes are a major risk (see the Detroit public transit that serv

I don’t think the needs of the riders are predictable. Large upfront costs and static design routes are a major risk (see the Detroit public transit that serves areas no longer of much interest and is often empty). That’s why many politicians favor buses as an example; they’re flexible enough to move with demand.