Traffic and Parking Commission backs cooperative agreement with Irvine to settle shared traffic‑mitigation costs; recommends city council approval

The Lake Forest Traffic and Parking Commission voted unanimously on Oct. 6, 2025 to recommend that the City Council approve a cooperative agreement with the City of Irvine to finalize fair‑share cost obligations for several shared intersections identified in the Lake Forest Transportation Mitigation Program (LFTMP).

City staff told the commission that the LFTMP is a developer fee‑based program adopted in 2008 that identifies intersection and signal improvements needed to mitigate traffic impacts from development. Tran Tran, traffic engineering manager, said city staff periodically updates the program to reflect current cost estimates and to confirm which improvements remain necessary. "The purpose of the co op agreement is simply to finalize the fair share cost obligations at these shared intersections," Tran said.

Staff identified four intersections that involve overlapping obligations between Lake…