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Consultants: Mission’s crash data show steady serious-injury crashes despite fewer total crashes
Summary
Burns & McDonnell told the council that while total crashes in Mission have declined since COVID, serious-injury crashes have remained steady; angle/intersection crashes account for a disproportionate share of injuries and the consultants flagged specific corridors for closer attention.
Burns & McDonnell presented a high-level safety analysis showing a mixed picture for Mission: total crashes have decreased in recent years, but the number of serious-injury crashes has remained relatively constant.
Jessica Hutton, the safety-analysis lead, said the team found "rear ends jump out as a primary contributor" to total crashes but that angle crashes at intersections contributed more to injuries. She also reported a 10-year total of nine fatalities in the dataset and explained that removing interstate crashes reduces Mission’s local-network fatality rate.
The consultants showed a five-year heat map that highlighted higher-crash corridors including Metcalf and Johnson Drive in Shawnee Mission. They noted that pedestrian and bicycle crashes were low over the period analyzed, with no pedestrian or bicycle fatalities in the five-year window, but they flagged KDOT-identified vulnerable-user segments for further attention.
Council members pressed the team on whether crash subtypes (rear-end, angle, fixed-object) could be plotted geographically and whether design changes—signal timing, lane widths—might reduce aggressive driving and inattention. The consultants said they can produce subtype-specific maps on request and recommended a "safe system" approach that mixes engineering and behavioral strategies.
