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 F
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- Traffic volume is 2578 veh/hr with 687 vehicles arriving in peak 15 minutes.There are tow lanes, 12 percent trucks(30/70 split for SUT/TT), the length of the road is 1.8 miles long with a 3.5 percent grade. calculate the analysis flow rate?A new section of Richmond Highway is being designed as a six-lane facility (three in each direction) with a two-way left-turn lane. Determine the peak-hour LOS. (Assume commuter traffic, 5% trucks, and no RVs.) Traffic data: demand volume = 3,120 veh/h PHF = 0.95 assumed base free-flow speed = 55 mi/h Geometric data: urban setting rolling terrain lane width = 11 ft shoulder widths = 4 ft (right side) and 1 ft (left side) average access point spacing = 12 points per mile on each side LOS A LOS B LOS C LOS D LOS E LOS FA rail transit system has prescribed the following factors:1. Peak hour demand = 30000 passengers/hr2. Minimum required speed = 55 ft/sec3. Deceleration = 3 ft/sec24. Safety factor = 1.455. Vehicle length = 80 ft6. Allowable vehicle capacity = 150 pass/veh7. Guideway utilization factor = 0.838. Minimum headway = 110 secHow many cars should the train consist of to provide adequate passenger capacity?
- An undivided multilane highway segment has the following characteristics: • Six lanes (three lanes in each direction); Lane width of 11 ft; • Speed limit of 45 mph; Right shoulders is 4 ft wide; • There are approximately 25 access points over a 2-mile section of this roadway, in each direction. Calculate the FFS at this highway section and then determine the level of service (LOS) when the flow rate is 1100 pc/h/In. (Write the answer for the LOS in the box below).An existing Class I two-lane highway is to be analyzed to determine the level of servicein each direction, given the following information:Traffic data:PHV = 600 veh/h60% in the peak direction8% trucks2% recreational vehiclesPHF = 0.86No passing zones: 40%Geometric data:Rolling terrainBFFS = 55 mi/h (88 km/h)Lane width = 11 ft (3.3 m)Shoulder width = 2 ft (0.6 m)8 access points per mile (5 access points per km)A freeway with flow rate ( VP ) = 1600 Pc/hr./In. and free flow speed = 55 %3D mile/hr. the recommended level of service ( LOS ) when you drop on Figure is: * O LOS A LOS D O LOS B LOS C LOS F
- A six-lane freeway (three lanes in each direction) in mountainous terrain has 10-ft lanes and obstructions 1 ft from the right edge. There are five ramps within three miles upstream of the segment midpoint and four ramps within three miles downstream of the segment midpoint. The traffic stream consists of mostly commuters with a peak hour factor of 0.84, peak-hour volume of 2500 vehicles, and 4% recreational vehicles. What is the level of service? (Write the letter only)The details of a 12-hour volume study for a 4- leg road junction are tabulated below. The N-S major road has two through lanes on each approach while the E-W minor road has one through lane on each approach. Examine the fulfilment of traffic signal Warrants 1 (Condition B) using the MUTCD 2009 standards. Minor Rd. (Higher Major Rd. (Total of approaches) Hour Start approach) Hr 1 Hr 2 Hr 3 734 98 880 122 850 120 Hr 4 955 100 Hr 5 941 105 Hr 6 915 95 Hr 7 1040 140 Hr 8 1010 150 Hr 9 790 156 а. W1B is not met b. W1B is met1- You are assigned to evaluate the level of service for a section of a six-lane rural highway that stretches along a level terrain with shoulder width of eight ft and lane width of twelve ft. The average annual daily traffic is fifty-five thousand vehicles per day with ten percent trucks, five percent buses, and three percent recreational vehicles. The peak hour factor is 0.80 and the directional split is fifty-fifty. The distance between consequent interchanges is two miles. Calculate the level of service for this highway section and show your calculation steps.
- 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…Consider the geometric and traffic characteristics shown below. Approach(Width) North(56 ft) South(56 ft) East(68 ft) West(68 ft) Peak hour Approach Volumes: Left Turn 165 105 200 166 Through Movement 447 400 590 543 Right Turn 162 157 191 200 Conflicting Pedestrian Volumes 900 1,200 1,200 900 PHF 0.95 0.95 0.95 0.95 For the following saturation flows: Through lanes: 1,600 veh/h/ln Through-right lanes: 1,400 veh/h/ln Left lanes: 1,000 veh/h/ln Left-through lanes: 1,200 veh/h/ln Left-through-right lanes: 1,100 veh/h/ln The total cycle length was 283 s. Now assume the saturation flow rates are 10% higher, that is, assume the following saturation flow rates: Through lanes: 1,760 veh/h/ln Through-right lanes: 1,540 veh/h/ln Left lanes: 1,100 veh/h/ln Left-through lanes: 1,320 veh/h/ln Left-through-right lanes: 1,210 veh/h/ln Determine a suitable signal phasing system and phase lengths (in s) for the intersection using the…A new section of Richmond Highway is being designed as a six-lane facility (three ineach direction) with a two-way left-turn lane. Determine the peak-hour LOS.Traffic data:• Directional design hourly volume = 3600 veh/h• PHF = 0.94• Assumed base free-flow speed = 55 mi/h (88 km/h)Geometric data:• Urban setting• Rolling terrain• Lane width = 11 ft (3.3 m)• Shoulder widths = 4 ft (1.2 m) (right side) and 1 ft (0.3 m) (left side)• Average access point spacing = 12 points per mile on each side