GATE CE 2025 Set 1 — Question 23
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Transportation Engineering → Traffic Studies & Flow → Peak Hour Factor
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Question
All the vehicles that come during a particular peak hour come during a 10-minute period within this hour. The 15-minute peak hour factor for this peak hour is
Correct answer
(A) 0.25
Solution
The Peak Hour Factor () for a 15-minute interval is defined as:where is the total hourly volume and is the maximum volume in any 15-minute interval within that hour.Given that all vehicles arrive within a 10-minute period, this entire volume must be contained within a single 15-minute interval. Therefore, .Substituting this into the formula:Thus, the correct option is (A).
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