LOS of Basic Freeway Given: > Four-lane freeway (2 in each direction) > Lane width = 11 ft > Right-side lateral clearance 2 ft - Commuter traffic (regular users) > Peak-direction demand volume 2,000 veh/h 5% trucks, 0% RVs > PHF = 0.92 > TRD = 4 ramps/mile > Rolling terrain,
Q: HW3: LOS of Basic Freeway Given: > Four-lane freeway (2 in each direction) > Lane width=11 ft >…
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Q: Determine the L.O.S of the road if PHF = 0.88, D= 60%, K=0.11, V=115 kph? For an Existing 4 lane…
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- A 2-lane highway has lane widths of 2.75m, with 1.83m clear hard shoulders. There are no-passing zones along 40% of its length. The directional split is 60/40 in favour of the peak direction. The percentages of the various heavy vehicles types are: Trucks PT – 10%, Buses PB – 4%, Cars Pc – 2%. The terrain is rolling; calculate the service flow of the highway when running at full capacityGiven four lane urban freeway, directional peak flow 1950 veh/hr. 5% truck PHF-0.9 rolling terrain with ideal condition for the road. Determine:1- Level of service of the operation. 2- How much additional traffic before reaching capacityDetermine the L.O.S of the road if PHF = 0.88, D= 60%, K=O.11, V=115 kph? For an Existing 4 lane freeway having the following features: • Lane and shoulder width = 12 ft, 6 ft, weekday commuter • Percent of trucks and buses = 8% and 4% respectively and Et =2.5, Eb =2.2• AADT = 35200 veh/day, Assume lane capacity * 2000 pc/hr
- A six-lane freeway (three lanes in each direction) has regular weekday users and currently operates at maximum LOS C conditions. The lanes are 3.5m wide, the right-side shoulder is 1.2 m wide, and there are two ramps within three miles upstream of the segment midpoint and one ramp within three miles downstream of the segment midpoint. The highway is on rolling terrain with 10% large trucks and buses (no recreational vehicles), and the peak-hour factor is 0.90. a) Determine the hourly volume for these conditions. b) At one point along this freeway, there is a 4% upgrade with a directional hourly traffic volume of 5000 vehicles. How long can this grade be without the freeway LOS dropping to F?A 960-m segment of 5.4-km six lane divided TWLTL multilane highway in a suburban area is at a 1.5% grade. The highway is in level terrain and lane widths are 3-m. The peak-hour volume is 3500 veh/hr/ln, PHF is 0.90, and there are 13% trucks and 2% RVs. Determine the LOS for the following:(a) extended directional segments (b) 3% upgrade(c) 4% downgradeA 960 m segment of 5.2 km four-lane undivided multilane highway in a suburban area is at a 1.5% grade. The highway is in level terrain and lane widths are 3.35 m. The measured free flow speed is 73 km/hr. The peak hour volume is 1900 veh/hr, PHF is 0.9 and there are 13% truck and 2% RVs. Determine the LOS, speed, and density for upgrade and downgrade.
- A section of four lane (two lanes in each direction) freeway in mountainous terrain, which is 2.5 mi long, is to be improved to carry on a regular weekday a heavy volume of 3000 veh/h, consisting of 80% passenger cars, 15% trucks, 3% buses, and 2% recreational vehicles. The PHF is 0.90. Determine the additional number of 12-ft lanes required in each direction if the road is to operate at LOS B. The base FFS is 65mph, there is a lateral obstruction 4ft from the pavement on the right side of the road, and interchange spacing is 2 mi. Driver population adjustment factor fp= 1.0.A four-lane rural freeway segment has a 510 m grade length of 2% upgrade followed by a 630 m grade length of 3%. The freeway has 3.4-m lane, 1.5m left-shoulder lateral clearances and interchanges spaced at every 25 km. During the peak hour, there are 6% trucks, 2% buses, 2% recreational vehicles and the rest are passenger cars. Driver population adjustment is determined to be 0.90, peak hour factor is 0.90 and the BFFS is 110 km/h. At present, the freeway operates at capacity during the peak hour in the direction in question. If an additional 3.4 m lane is introduced, and all other factors stay the same, what will be the new level of service?A six-lane freeway (three lanes in each direction) has regular weekday users and currently operates at maximum LOS C conditions. The lanes are 11 ft wide, the right-side shoulder is 4 ft wide, and there are two ramps within three miles upstream of the segment midpoint and one ramp within three miles downstream of the segment midpoint. The highway is on rolling terrain with 10% large trucks and buses (no recreational vehicles), and the peak-hour factor is 0.90. b.) Determine the adjustment factor (f). (Express in three decimals)
- A segment of rural freeway is being designed for a FFS of 65 mph using 11 ft lanes in a mountainous area. The lateral clearance is nominal (1 ft). The directional (i.e. one-way) design flow rate is expected to be 2,400 passenger cars per hour. How many lanes in one direction will be needed to provide at least a LOS B?Find the upgrade and downgrade service flow rates and service volumes for an eight lane freeway with the following characteristics: (11 ft lanes, 2 ft right-side clearance, 4.2 ramps/mile, 3% trucks, good weather, regular drivers, PHF of 0.92) The segment in question is on a sustained grade of 3.5%, 1.5 miles in length.A 4-lane rural basic freeway segment is with hourly flow rate = 1528 pcphpl. The interchange density is 0.8/km, average lane width is 3.7m, sufficient lateral clearance. Using the HCM 2000 procedure, the estimated FFS speed (kph) and the current segment LOS are …………. and …………….. respectively. a. 108 & LOS D b. 107 & LOS E c. 114 & LOS C d. 104 & LOS B e. none