Determine the practical stopping distance (m) for a road with speed limit of 50kph and grade of 4.9%.
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Determine the practical stopping distance (m) for a road with speed limit of 50kph and grade of 4.9%.
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- Determine the total stopping distance (ft) for a road with speed limit of 79mph and grade of -2.5%A 6-mile two lane highway in rolling terrain has the following data: Volume = 1500 veh/hr (two way); PT = 14%; PRV = 4%; peak fifteen minute volume is 415 vehicles. Percent no passing is 60% for a 50-50 directional split; lane width is 10.5ft, with a shoulder width of 4-ft; access points = 20 per mile. Assume the base free flow speed measured on the field is 65 mph. Determine the free flow speed at the highway section in mph.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
- Calculate the total width of the road required (with extra widening) with width equal to 7.5 m on a horizontal curve of radius 230, if the longest vehicle expected is 8 meters, with the design speed of 25 m/s.Problem Determine the level of service? for six lanes undivided level highway. The width of lane, shoulder on the right side, and shoulder on the left side are 10 ft, 2 ft, and 2 ft respectively. The directional hour volume is 3500 Veh/h. The traffic composition includes 15% trucks and 1% RVs. The peak hour factor is 0.80. Unfamiliar drivers use the road that has 10 access points per mile. The design speed is 55 mi/h. Discuss possible modifications to upgrade the level of service? (Verify your answer)Plz, solve this problem. Transportation Engineering-2 A four-lane highway (2 lanes in each direction) with 3.65m lanes has a horizontal curve designed for a 380 m centerline radius, and a 110 km/hr design speed. The grade is level. Use a driver perception reaction time of 2.5 sec and a vehicle deceleration rate of 3.4 m/sec2. Determine the closest distance any roadside object may be placed to the centerline of the inside lane of the roadway.(note: Do not round any value. Use calculated values).
- Q2/ A 3200 ft segment of 3.25-mi 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 11 ft. The measured free-flow speed is 46.0 mi/h. The peak-hour volume is 1900 veh/h, PHF is 0.90, and there are 13% trucks and 2% RVs. Determine the LO, speed, and density.2.6-What is the safe stopping distance for a section of rural freeway with a design speed of 80 mi/h on a 4% upgrade? (Ans. 902.63 ft)A six-lane multilane highway (three lanes in each direction) has 10-ft lanes with 5-ft shoulders on the right side. There are 10 access points per mile and the posted speed limit is 50 mph. The median is TWLTL. Estimate the free flow speed.
- A two-lane minor road intersects a two-lane undivided major road at 90 degrees, forming a four-leg intersection with traffic on the minor road controlled by a yield sign. A building is located 50 m from the center line of the outside lane of the major road and 14 m from the center line of the nearest lane of the minor road. A passenger car on the minor road would like to cross the major road. Using the AASHTO procedure, determine the maximum speed that can be allowed on the minor road if the design speed on the major road is 80 km/h. Assume a 3% approach grade for the minor road. Note: 1km/hr = 0.62mi/h, 1ft = 0.3048mIf 420’ are available as Sight distance on an urban highway having a 2.5% grade. Assuming all the parameters according to ASHTO, find maximum speed which can be posted on the highway for safe travelling.Determine the value of PTSF for a 6-mile two-lane highway in rolling terrain. Traffic data are as follows: • Volume = 1600 veh/h (two-way) • Percent trucks = 14% • Percent RVs = 4% • Peak hour factor = 0.95 • Percent directional split = 50 - 50 • Percent no-passing zones = 50