ramps within 3 miles upstream and downstream ofthe segment midpoint. It is on rolling terrain with10% heavy vehicles and is operating at capacity witha peak-hour factor of 0.9. If the road is expanded tofour 11-foot lanes with a 2-foot right shoulder, andtraffic after the expansion is projected to increase by10% with the same heavy vehicle percentage andpeak-hour factor, what is the new LOS andestimated density?P-22 Chapter 6Problemshour. What would be the LOS before and after theheavy vehicles are allowed on the upgrade(assuming 50% SUTs and 50% TTs.)?6.21 A multilane highway has four lanes (two lanesin each direction) and a measured FFS of 55 mi/h.The directional peak-hour volume is 1900 vehicles(the peak-hour factor is 0.80). One upgrade is 5%and is 0.62 mi long. Currently, heavy vehicles arenot permitted on the highway, but local authoritiesare considering allowing heavy vehicles on thisupgrade. If this is done, they estimate that 150heavy vehicles will use the highway during the peakconsists of cars and some percentage of heavyvehicles. The peak-hour factor is 0.85. If heavyvehicles were banned from the highway and car

N=4 lanesFFS= 55 mi/hPHF=0.8PHV= 1900 vehupfrade=55%SUT (50%) and TT (50%) No. of trucks…

6.21 A multilane highway has four lanes (two lanes in each direction) and a measured FFS of 55 mi/h. The directional peak-hour volume is 1900 vehicles (the peak-hour factor is 0.80). One upgrade is 5% and is 0.62 mi long. Currently, heavy vehicles are not permitted on the highway, but local authorities are considering allowing heavy vehicles on this upgrade. If this is done, they estimate that 150 heavy vehicles will use the highway during the peak

6.21 A multilane highway has four lanes (two lanes in each direction) and a measured FFS of 55 mi/h. The directional peak-hour volume is 1900 vehicles (the peak-hour factor is 0.80). One upgrade is 5% and is 0.62 mi long. Currently, heavy vehicles are not permitted on the highway, but local authorities are considering allowing heavy vehicles on this upgrade. If this is done, they estimate that 150 heavy vehicles will use the highway during the peak

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A long segment of suburban freeway is to be designed on level terrain. The level segment, however, is followed by a 4.5% grade, 2.0 miles in length. If the DDHV is 2,500 vehicles per hour with 15% trucks (standard mix), how many lanes will be needed on the (A.) Upgrade, (B.) Downgrade, (C.) Level terrain segment to provide for level of service C? Lane widths and lateral clearances may be assumed to be 12 feet and 6 feet, respectively. Ramp density is expected to be 1.0 ramps per mile. The PHF is 0.92. Good weather, no incidents, no work zones, and regular users of the facility may be assumed.
Eight lane urban freeway is on mountainous terrain with lane width of 12 ft, right shoulder lateral clearance of 4 ft, and 12 ramps over the 6-mi analysis segment. The traffic stream consists of familiar road users. Peak hour volume for a directional weekday of 5200 vehicles is observed with 500 vehicles arriving in the most congested 15-min period. If the traffic stream has 10% large trucks and 12% buses and 10% recreational vehicles, determine the heavy vehicle adjustment factor. Round your answer to 3 decimal places. Exclude the unit in the answer box.
A 6-lane urban freeway is suggested to be designed with the following data: F.ADT = 45000 vpd, design hour factor= 0.12 and directional split = 65%. Rolling terrain, 10% trucks, 5% buses, 6% Rvs, PHF is 0.91 and all traffic are commuters. Then based on the HCM 2000 procedure, the equivalent passenger- car hourly flow rate is about
Eight lane urban freeway is on mountainous terrain with lane width of 12 ft, right shoulder lateral clearance of 4 ft, and 12 ramps over the 6-mi analysis segment. The traffic stream consists of familiar road users. Peak hour volume for a directional weekday of 5200 vehicles is observed with 500 vehicles arriving in the most congested 15-min period. If the traffic stream has 10% large trucks and 12% buses and 10% recreational vehicles, determine the density in pc/mi/In. Round your answer to 3 decimal places. Exclude the unit in the answer box.
A 5% upgrade on a six-lane freeway (three lanes in each direction) is 1.25 mi long. On this segment of freeway, there is 3% SUTS and 7% TTs, and the peak-hour factor is 0.90. The lanes are 12 ft wide, there are no lateral obstructions within 6 ft of the roadway, and the total ramp density is 1.0 ramps per mile. What is the maximum directional peak-hour volume that can be accommodated without exceeding LOS C operating conditions in veh/h? Round of your answer to whole number. Blank 1
Find level of service (LOS) for an old freeway in Basrah city with the following characteristics: (free flow speed (FFS) = 65 (mi/hr), peak hour factor (PHF) = 0.80, umber on lanes (N) = 3 in one direction, factor of heavy vehicles (fív) = 0.90 and traffic volume (V) = 2200 (veh/hr).
An existing four-lane freeway in rural area is with the following :information Lane width 3.5m, 0.9m lateral clearance, 1800 veh/hr peak hour volume, PHF=0.9, interchange density =0.90, 5% trucks, 5% buses and the road is within a mountainous terrain. Then based on the HCM procedure, the service flow rate (pc/h/In) is
If Vf = 2327 VPH with 9% trucks, VR1 = 653 VPH with 5% trucks, and VR2 = 594 VPH with 8% trucks, what is the passenger car equivalents (Vpcph) of the onramp? Assume that the roadway is urban.
Problem 4: A six-lane freeway has 11-ft lanes with 5-ft shoulders on the right side. There are 5 interchanges every ten miles. Estimate the free flow speed.
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