Velocipedestrienne 🇿🇦 on Nostr: 🧵 8/? So along with trip/parking generation rates, there's another immutable truth ...

🧵 8/? So along with trip/parking generation rates, there's another immutable truth to traffic engineering that is junk science, and that is steps 1-3 in the four-step travel demand modeling process.
1. Trip Generation
2. Trip Distribution
3. Mode Split
4. Trip Assignment

Early in my career, I did travel demand modeling on four continents both unimodal and multimodal, and at one point, I "owned" the National Rail Model for the UK.