1. Traffic volumes on a four-lane freeway (two lanes in each direction) were counted manually from an overhead location, resulting in the data shown here. The desire was to obtain continuous 15-minute counts for each lane of the freeway for a two-hour period surrounding the morning peak hour.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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1. Traffic volumes on a four-lane freeway (two lanes in
each direction) were counted manually from an
overhead location, resulting in the data shown here.
The desire was to obtain continuous 15-minute counts
for each lane of the freeway for a two-hour period
surrounding the morning peak hour.
11On
400
linc
W
Data for Problem 1
Eastbound
Westbound
Time of Count (PM) Lane 1 Lane 2 Lane 1 Lane 2
4:00-4:12
4:15-4:27
4:30-4:42
4:45-4:57
5:00-5:12
360
310
350
285
380
330
370
300
370
340
5:15-5:27
5:30-5:42
5:45-5:57
345
280
340
260
310
320
From the data shown, determine the following:
(a) Continuous 15-minute volumes for each period
and each lane.
(b) The peak hour, peak hour volume, and peak hour
factor (PHF) for each direction of flow and for the
freeway as a whole.
(c) Directional flow rates during each 15-minute
count period.
Transcribed Image Text:Problems 1. Traffic volumes on a four-lane freeway (two lanes in each direction) were counted manually from an overhead location, resulting in the data shown here. The desire was to obtain continuous 15-minute counts for each lane of the freeway for a two-hour period surrounding the morning peak hour. 11On 400 linc W Data for Problem 1 Eastbound Westbound Time of Count (PM) Lane 1 Lane 2 Lane 1 Lane 2 4:00-4:12 4:15-4:27 4:30-4:42 4:45-4:57 5:00-5:12 360 310 350 285 380 330 370 300 370 340 5:15-5:27 5:30-5:42 5:45-5:57 345 280 340 260 310 320 From the data shown, determine the following: (a) Continuous 15-minute volumes for each period and each lane. (b) The peak hour, peak hour volume, and peak hour factor (PHF) for each direction of flow and for the freeway as a whole. (c) Directional flow rates during each 15-minute count period.
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