Council adopts traffic‑impact study thresholds and adds Appendix B to Public Works Manual
May 20, 2026
Council added Appendix B to the Public Works Manual to set clear traffic‑impact study thresholds (trip‑generation letters for 20–49 peak-hour trips, full studies at 50+) and compliance letters; the policy clarifies when developers must provide documentation and when CDOT jurisdiction applies.
The full story
City engineering and planning staff presented the code amendment and Appendix B establishing trip‑generation thresholds and three document types — trip generation letter (20–49 peak‑hour trips), full traffic‑impact study (50+), and compliance letter — to standardize developer requirements and reduce inconsistent prior practice. Staff explained that the criteria do not supersede CDOT access requirements and that safety analyses may be required where historical crash data indicate concerns.
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