A section of Prices Fork south of Blacksburg is being redesigned to increase the current 45 mi/hr speed limit to 60 mi/hr. The sectionhas two 11-ft lanes and a horizontal curve with a central angle of 33 degrees with forest on either side. The superelevation will beincreased to 8% as part of the redesign.• If the Pl is at station 300+00, what is the station of PT•What is the length of curve?•How many feet have to be cleared of trees from the inside lane's lane-shoulder edge to provide adequate stopping sight distance?

Let's break down the problem and solve it step by step: So, about 452.16 ft of trees must be…

Answered: A section of Prices Fork south of…

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter15: Geometric Design Of Highway Facilities

Section: Chapter Questions

Problem 19P

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PROBLEM 7 A +2 percent grade on an arterial highway intersects with a -1 percent grade at station 535 + 24.25 at an elevation of 300 ft. If the design speed of the highway is 65 mi/h, determine the stations and elevations of the initial point of vertical curve (PVC), the final point of vertical curve (PVT), the high point, and the elevation of each 100-ft station.
Last 3 digit of id =030
Problem 5 An existing horizontal curve on a highway has a radius of 465 ft, which restricts the posted speed limit to only 61.5% of the design speed on this section of the highway. If the curve is to be improved, so that its posted speed will be the design speed of the highway, determine the minimum radius of the new curve. Assume that the rate of superelevation is 0.08 for both the existing curve and the new curve to be designed and f,=0.16 for 40 mph, 0.14 for 50 mph, 0.12 for 60 mph, and 0.10 for 70 mph.
A new highway is designed to join a crest curve with +1.0% and -0.5% grades for PVC and PVT, respectively. Knowing that the stations of PVC and PVI are STA 51+25 and STA 56+90, examine whether or not the curve is long enough to provide passing sight distance when the design speed is 60mi/h.
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A horizontal curve is to be designed to connect two tangents on a rural principal arterial with a design speed of 110 km/h. The station of the BC is 545+13.65. It is expected that an existing building will be located at a distance of 15 m from the centerline of the inside lane. Determine the minimum radius that will satisfy the sight distance and superelevation requirements.
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. ............. а. 104 & LOS B b. 107 & LOS E С. 108 & LOS D d. 114 & LOS C е. none
Engineers group have been decided to design a highway with vertical curve in order to transfer the traffic volume through it, with a (1.90) percent grade meting (- 3.90) percent grade. The vertical curve length (984.00) ft. (Use fSkidding= 0.35, t = 2.5 sec.), sight distance you :recommended is 677 ft. 505 m. O 605 ft. O 650 ft. O 600 ft. O
A 3% grade on a principal arterial road intersects with a -2% grade at station (335+54.5) at an elevation of 323 ft. If the design speed is 60 mph, design the minimum vertical curve length, L Fast please handwritten only fast fast
A downgrade of 2% intersects an upgrade of 4% at an elevation of 200 feet at station 55+15.00, where a 300 feet curve will be fitted. Calculate a) middle ordinate in feet b) station and elevation of the BVC c) station and elevation of the EVC d) station and elevation of the low point. Provide a sketch of the curve.
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