Flutterby™! : TREDIS

Hmmmm... TREDIS - Transportation Economic Development Impact System. Must learn more.

First impressions: Inside TREDIS says:

Unlike “black box” methods, each of the key elements of TREDIS is well-defined and clearly documented, using techniques backed by peer-reviewed publications and approved by public agencies. The key elements are summarized below; see the resources section for further documentation.

But that resources section link doesn't immediately lead to information about the models like I'd hope it would.

At any rate, if the Strong Towns thesis is correct, understanding and figuring out how to provide better data than the TREDIS model provides is probably the first step towards fixing the mess we've gotten into by over-spending on underperforming infrastructure.