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Engineering · Civil Engineering
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9-1. Traffic volumes on a four-lane freeway (tw lanes in each direction) were counted manuall from an overhead location, resulting in the data shown below. The desire was to obtain continu- ous 15-minute counts for each lane of the freewa for a two-hour period surrounding the morning peak hour. Data for Problem 1 Eastbound Westbound Time of Count (PM) Lane 1 Lane 2 Lane 1 Lane 2 310 4:00-4:12 4:15-4:27 350 4:30-4:42 4:45-4:57370 360 285 330 380 370 340 300 280 260 340 5:00-5:12 5:15-5:27 345 5:30-5:42 5:45-5:57 320 310
rom the data shown, determine the following: (a) Continuous 15-minute volumes for each peri- od and each lane,. (b) The peak-hour, peak-hour volume, and 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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