NVTA staff propose edits to performance measures; reliability metric may be modified

NVTA staff presented specific proposed edits to TransAction performance measures and weights. The team recommended dropping or modifying a reliability measure that tracked the duration of severe congestion, saying historical project analyses produced only marginal changes ("0.05 0.02" reported in the model results). Staff said the technical advisory committee recommended modifying rather than wholesale dropping and indicated staff will return with refined options.

Staff also proposed expanding the safety and bike/ped treatment categories from a narrow set to a broader range (low/medium/high expanded) so interventions such as concrete barriers, bollards, and separated facilities can be scored more distinctly. Access‑to‑jobs measures would be split into separate auto, transit and bike metrics and paired with equity‑focused accessibility weights so half the benefit could emphasize equity populations. Staff emphasized that by law NVTA must give priority to congestion reduction, but the proposed tweaks aim to better capture multimodal and safety benefits.