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Carroll County transportation staff report higher truck shares, plan hourly data for school-zone counts
Summary
Transportation staff told the Carroll County Administrative and Technical Transportation Committee that truck percentages and 85th/percentile speed metrics have risen at several counting stations; staff said they will compile hourly data for school-zone periods at the end of the count season and have added new counters to the fleet.
Carroll County transportation staff reported that truck percentages at several counting stations increased this year and that 85th-percentile speeds show slight increases since 2023. The committee discussed counts taken on a three-year cycle and concerns about how school-zone reductions affect measured speeds.
The issue matters locally because the committee uses count results to set safety treatments and signal timing near schools and along rural routes. Staff said they are continuing the current count season and will provide hourly breakdowns that separate school-zone periods once counting finishes.
A transportation staff member told the committee the program…
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