A researcher was positioned at the side of a 2-lane rural highway. He recorded the volume of northbound traffic, aggregated into 15 minute intervals. The recorded volumes were 243, 276, 318 and 490 vehicles for the first, second, third, and fourth 15-minute intervals, respectively. Calculate the peak hour factor. Provide your answer to the nearest hundredths.
A researcher was positioned at the side of a 2-lane rural highway. He recorded the volume of northbound traffic, aggregated into 15 minute intervals. The recorded volumes were 243, 276, 318 and 490 vehicles for the first, second, third, and fourth 15-minute intervals, respectively. Calculate the peak hour factor. Provide your answer to the nearest hundredths.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![**Question 8**
A researcher was positioned at the side of a 2-lane rural highway. He recorded the volume of northbound traffic, aggregated into 15-minute intervals. The recorded volumes were 243, 276, 318, and 490 vehicles for the first, second, third, and fourth 15-minute intervals, respectively. Calculate the peak hour factor. Provide your answer to the nearest hundredths.
**[Input Box]**
Explanation of Concepts:
- **Peak Hour Factor (PHF):** The PHF is a measure used in transportation engineering to assess traffic flow and helps determine the capacity and efficiency of roads. It indicates the variation of traffic volume within an hour.
- **Calculation of PHF:** It can be calculated using the formula:
\[
\text{PHF} = \frac{\text{Total hourly volume}}{4 \times \text{Peak 15-minute volume}}
\]
- **Interpreting Results:** A PHF closer to 1 indicates a consistent traffic flow over the hour, whereas a lower PHF suggests a highly variable flow with peaks.
*This page may include interactive components for applying the concept.*](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fab36c22a-00c3-4dd9-a606-6c231c8981b3%2F50ae6710-4498-4511-b8c5-670680a0f502%2Fx6ilv9_processed.png&w=3840&q=75)
Transcribed Image Text:**Question 8**
A researcher was positioned at the side of a 2-lane rural highway. He recorded the volume of northbound traffic, aggregated into 15-minute intervals. The recorded volumes were 243, 276, 318, and 490 vehicles for the first, second, third, and fourth 15-minute intervals, respectively. Calculate the peak hour factor. Provide your answer to the nearest hundredths.
**[Input Box]**
Explanation of Concepts:
- **Peak Hour Factor (PHF):** The PHF is a measure used in transportation engineering to assess traffic flow and helps determine the capacity and efficiency of roads. It indicates the variation of traffic volume within an hour.
- **Calculation of PHF:** It can be calculated using the formula:
\[
\text{PHF} = \frac{\text{Total hourly volume}}{4 \times \text{Peak 15-minute volume}}
\]
- **Interpreting Results:** A PHF closer to 1 indicates a consistent traffic flow over the hour, whereas a lower PHF suggests a highly variable flow with peaks.
*This page may include interactive components for applying the concept.*
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