Trip rates/equations by land use code from national studies; the default demand basis for TIAs (unless agency dictates otherwise).
Why: trip gen drives study scope and mitigation; misuse (wrong LU code, rate vs equation, wrong setting/period) is the most-reviewed part of any TIA.
When: every TIA; internal capture & pass-by adjustments via the companion Handbook procedures.
Example questions:
- rate or equation for this size?
- weekday PM vs peak-of-generator?
- which pass-by % is defensible and what’s the agency cap?
Spawn: Trip Generation - Internal Capture and Pass-By · agency-specific caps in 03 Agencies notes.
Related: ITE TIA Recommended Practice · ITE Parking Generation