Source-aware traffic research
Start with the plain-language result, then inspect the study’s time window, source notes, model choices, limitations, and available downloads before citing it.
Published studies
Each study separates what the data show from what the analysis cannot establish. The linked study pages provide the actual findings and any available data artifacts.
Colorado monthly crash, injury, fatality, and gasoline-price analysis
Examines whether the relationship changes after accounting for seasonality and a break in the public monthly crash series.
Read the studyColorado crash counts and nationwide FARS fatal-crash comparison
Compares Friday-the-13th dates with matched Fridays and keeps the Colorado and national results separate.
Read the studyState gasoline prices, FARS fatal crashes, fatalities, and vehicle miles traveled
Tests several national models and presents a cautious result when the signal is weak or changes across specifications.
Read the studyFor journalists and researchers
Use the study page’s stated time window, units, sample size, source agencies, exclusions, and limitations. Prefer the downloadable table or method note over a screenshot, and link to the canonical study so readers can inspect the same evidence.