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- 5. Find the level of service of the following road: (45 points) ▪ ▪ 6-lane multilane highway, terrain: 2 miles long 4% upgrade, speed limit: 55 mi/h lanes: 11ft, a two-way left-tum lane in the median, right shoulder: 5 ft, PHF: 0.90 peak hour traffic volume in each direction: 4500 veh/h with 10% SUTs and 5% TTs ▪ 30 access points in 2 miles ▪ Solution ET = 2.745 fHV = 0.792 Vp 2104 pc/h/In FFS = 50.15 mph c = 2083 pc/h/In S = 46.13 mph D = 45.61 pc/mi/In LOS FIf the weaving configuration below has four lanes and 2000 feet between the ramps, propose the improvements needed to reach an overall level of service of C. Assume a PHF of 0.92, 10% trucks, FFS of 65 mph, lane capacity under ideal conditions of 2,350 pcph and 0.8 interchanges per mile. VFR 1200 VPH = VFF 3000 VPH = VRR = 2300 VPH VRF 1000 VPHThe following cross-section notes of the road was examined to calculate volumes. The width of the roadway is 12m -12 -3 -6 4 +6 -6 +24 -9 STA 5+040 +6 -15 -4.5 -6 -6 30 -12 -7 -8 STA 5+140 Compute the volume between two stations using end area method.
- During the peak hour on a Class I two-lane highway, volumes northbound are 1200 veh/h and volumes southbound are 400 veh/h. The PHF is 0.95, and there are 14% trucks/ buses and 4% RVs. Lane widths are 3.35-m, and shoulder widths are 1.2-m. The roadway section is 8-km in length, and there are 12 access points per mi. There are 50% no-passing zones and the base free-flow speed is 96 km/h. Determine the base percent time following in the direction analyzed in percent. Assume Level terrain.QUESTION 8 The 3 eastbound lanes of a rural freeway segment have 11 ft lane widths. There is a 3 ft lateral clearance on the right side of the road. There are no ramps within the influence area. What is the estimated FFS (mph)? Provide your answer to the nearest tenths.(b) As a civil engineer, you are in of Discuss the purpos involved in highway road constructions. super-elevation in transition curve road design.
- HW1 What are the level of service and capacity of the weaving segment on the urban freeway shown below? ID trucks; PHF=0.91; level terrain; f,=1, FFS=65 mph 0.8 int./mi -10 percent Ls = 1,500 ft VFF = 1,815 veh/h VRF = 1,037 veh/h VFR = 692 veh/h VRR = 1,297 veh/h v= 4,841 veh/hProblem 3: Highway segment is going under planning review. Given the following facts: Lane Width = 3.4 m Number of Lanes (N) - 2 (in cach direction) Total Lateral Clearance = 3.0 m Median No Median The 85th % Speed was found to be 100 km/hr (i.e. BFFS = 100 km/hr) PHF - 0.83 Terrain Type: Rolling You are asked to: A. Determine the maximum peak-hour volume that the segment can serve at a LOS C. B. Make suggestions on how to increase the total capacity while maintaining the LOS at C without major investments.A rural collector highway located in mountainous terrain is designed to carry a design volume of 2120 veh/day, Determine the folowing (use any necessary deta from this table and this tatie) (0) a suitable design speed (Enter the minimum design speed in m/h.) mi/h (b) lane and usable shoulder widths (in t) lane width shoulder width (c) maximum desirabie grade (as a percent) Need Help? Raad
- The 4 northbound lanes of a rural freeway segment have 13 ft lane widths. There is no lateral clearance afforded on either side of the road. There are no ramps within the area of influence. What is the estimated FFS (mph)? Provide your answer to the nearest tenths.ramps within 3 miles upstream and downstream of the segment midpoint. It is on rolling terrain with 10% heavy vehicles and is operating at capacity with a peak-hour factor of 0.9. If the road is expanded to four 11-foot lanes with a 2-foot right shoulder, and traffic after the expansion is projected to increase by 10% with the same heavy vehicle percentage and peak-hour factor, what is the new LOS and estimated density? P-22 Chapter 6 Problems hour. What would be the LOS before and after the heavy vehicles are allowed on the upgrade (assuming 50% SUTs and 50% TTs.)? 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 average center to center spacing of vehicles in a simple lane highway is 50 m. The volume of traffic is 600 vehicles per hour. Determine the average speed of the cars using this lane.. help