1) A horizontal curve is being designed around a pond with a
tangent length of 1200 ft and central angle of 0.5211 radians. If
the PI is at station 145+00, determine the station of PT.
⦁ 168+45.43
⦁ 156+45.43
⦁ 173+94.00
⦁ 156+72.72
2) A car is traveling downhill on a suburban road with a grade
of 3% at a speed of 35 mi/h. Determine the stopping sight distance
based on a reaction time of 2.5 second, and a deceleration rate of
11.2 ft/s2.
⦁ 257.08 ft
⦁ 236.63 ft
⦁ 249.15 ft
⦁ 254.23 ft
3) A 400-ft equal-tangent sag vertical curve has its PVC at
station 100+00 and elevation 500 ft. The initial grade is -4.0% and
the final grade is +2.5%. Determine the elevation of the lowest
point of the curve.
⦁ 495.077 ft
⦁ 495.250 ft
⦁ 485.231 ft
⦁ 492.043 ft
4) Which of the following is NOT a safety performance measure?
A. Crash rates
B. Number of traffic conflicts
C. Total traffic volume
D. Fatalities per accident
1) A horizontal curve is being designed around a pond with a tangent length of 1200...
a) a 200 m vertical crest curve is designed to connect a +4.5% tangent with a -2% tangent. What should the design speed be to provide ample stopping sight distance? SSD t Pra) [10 marks) b) A 300 m sag parabolic vertical curve has a PVC at station 2+600.000 and elevation 320.000 m. the initial grade is -4.0% and the final grade is +1.0%. Determine the stationing and elevation of PVI, PVT and the lowest point on the curve. Also...
13. A 400-ft long equal tangent sag vertical curve has its PVC at station 100+00 and o b elevation 500 ft, the initial grade g,--4% and the final grade g2 elevation of the lowest point of the curve. +2.5%. Determine the
A 5 degree curve (measured at the centerline of the inside lane) is being designed for a highway with a design speed of 60 mph. What is the closest any roadside object may be placed to the centerline of the inside lane of the roadway while maintaining adequate stopping sight distance? Assume lane widths are 12 feet. 3) A 520-ft long equal tangent crest vertical curve connects tangents that intersect at station 340+00 and elevation 1325 ft. The initial grade...
25. A spiral curve with a length of 50 feet connects a tangent to a curve having a radius of 100 feet. Deter- mine the offset from the tangent to the point where the spiral connects to the curve and the length of throw from the tangent. 26. Given a spiral curve with a length of 150 feet, which connects a tangent to a curve having a radius of 200 feet, determine the offsets from the tangent to the midpoint...
9:381 LTE Problem 1 A crest vertical curve is to be designed to join a +2% grade with a-2% at a section of a two-lane highway. Determine the minimum length of the curve if the design speed of the highway is 60 mph and SL. Assume that a-9.34 ftsec' and that the perception-reaction time is 2.5 sec. Problem2 A crest vertical curve is to be designed to join a +3% grade with a-2% grade at a section of a two-lane...
(10 pts) A sag vertical curve is designed with the PVC at station 10900 and elevation 950.00 ft, the PVI at station 110 +77 and elevation 947.34 ft, and the low point at station 110 + 30 a. b. Determine the sight distance provided by the geometry. Determine the design speed of the curve
A 500-ft-long equal-tangent crest vertical curve connects tangents that intersect at station 340 + 00 and elevation 1322 ft. The initial grade is +4.0% and the final grade is -2.5%. Determine the elevation and stationing of the high point, PVC, and PVT. Solve this problem using parabolic equation and offset method.
28. A car is traveling downhill on a suburban road with a grade of 3% at a speed of 35 mi/h. Determine the stopping sight distance based on a reaction time of 2.5 second, and a deceleration rate of 11.2 ft/s2. 257.08 ft b. 236.63 ft 249.15 ft d. 254.23 ft a. C.
A 200m equal tangent sag vertical curve has the PVC at station 3 + 700.000 and elevation 321m. The initial grade is -3.5% and the final grade is 0.5%. Determine the elevation and stationing of the PVI, PVT, and lowest point on the curve.
A sag vertical curve will connect two tangents, a -3% grade and a +5% grade, 800 ft apart. The ravine in which the sag curve will be situated needs to be built up. The elevation of the curve at its deepest point must be at elevation 168.00 ft or higher to clear a major pipe installation. If the PVC is at station 00 + 00.00 with an elevation of 176.20 ft, determine the location of the deepest point of the...