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1. A four-lane freeway (two lanes in each direction) segment consists of passenger cars only, a peak-hour directional distribution of 0.70, a peak- hour factor of 0.80, and a measured FFS of 70 mi/h. Assuming Fig. 6.8 applies, if the AADT is 30,000 veh/day, determine the LOS for the 10th, 50th, and 100th highest annual hourly volumes.
2. A four-lane freeway (two lanes in each direction) operates at capacity during the peak hour. It has 11-ft lanes, 4-ft shoulders, and there are three ramps within three miles upstream of the segment midpoint and four ramps within three miles downstream of the segment midpoint. The freeway is on rolling terrain and has 8% heavy vehicles with a peak-hour factor of 0.85. It is known that 12% of the AADT occurs in the peak hour and that the directional factor is 0.6. What is the freeway’s AADT?
3. A six-lane multilane highway (three lanes in each direction) currently operates at maximum LOS C conditions. The measured FFS is 55 mi/h. The highway is on rolling terrain with 14% SUTs and 6% TTs, and the peak-hour factor is 0.92. If 17% of all directional traffic occurs during the peak hour, determine the total directional traffic volume.
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