A horizontal curve is being designed to connect two tangents that intersect on a rural collector road with a specified design volume of 2500 veh/day (i.c. design speed 60 mph). It is expected that, because of right-of-way restriction, a large billboard will be placed at a distance of 50 ft from the centerline of the inside lane. If the terrain can be described as level and only a minimal amount of snow is expected on the road, determine the minimum radius of curve. Assume maximum superelevation rate (e) of 0.1 and fs-0.12. Ans: 1090 ft

A horizontal curve is being designed to connect two tangents that intersect on a rural collector road with a specified design volume of 2500 veh/day (i.c. design speed 60 mph). It is expected that, because of right-of-way restriction, a large billboard will be placed at a distance of 50 ft from the centerline of the inside lane. If the terrain can be described as level and only a minimal amount of snow is expected on the road, determine the minimum radius of curve. Assume maximum superelevation rate (e) of 0.1 and fs-0.12. Ans: 1090 ft

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 25P

See similar textbooks

Similar questions

Problem 5 A two-lane road has a horizontal curve on with a degree of curvature equal to 5 and a stopping sight distance of 340 feet. Assuming the curve has a backslope of 4 to 1. What is the recommend clear zone for this section of road.
What is the appropriate super elevation rate for a curve with a 1,200-ft radius on highway with a design speed of 60 mi/h? The maximum design super elevation is 6% for this highway.
Design speed of a six-lane undivided highway is 70 mph. A circular section of the highway has level grade, 10-ft wide lane, and the radius of the highway centerline is 1000 ft. Calculate the minimum side clearance required from the edge of the innermost lane on the highway to provide adequate sight distance for safe travel
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 islocated 185ft from the center line of the outside lane of the major road. The design speed on themajor road is 60 mi/h and the design speed on the minor is 35 mi/h. The approach grade on the minorroad is 3%. A passenger car on the minor road would like to cross the major road. Using theAASHTO procedure, determine the minimum distance required that the building must be from thenearest lane on the minor road
A horizontal curve is to be designed for a section of a highway having a design speed of 60 mi/h. (a) If the physical conditions restrict the radius of the curve to 500 ft, what value is required for the superelevation at this curve?(b) Is this a good design?
Determine the minimum and designed radius of a highway curve with a design speed 33.33 m/s, with a banking of 7%, and a sight distance of 125 meters with 10 meter distance from the obstruction. pls answer w/ complete solution
Find the length of transition curve and extra width of pavement required on a horizontal curve of radius 300 m of a two lane highway passing through rolling terrain for a design speed of 80 kmph. (Assume all other data as per IRC recommendations)
How much space should be cleared between an obstruction and the center of a roadway (in ft) for a horizontal curve with 2-11 ft lanes if the design speed is 67 mph and the radius of the curve is 1,037?
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
An existing vertical curve on a highway joins a +4.4% grade with a -4.4% grade. If the length of the curve is 82m, what is the maximum safe speed on this curve? What speed should be posted if 8kph increments are used?
Calculate the minimum length af a crest vertical curve for a two lane highway with an initial grade of +3.5 and a final grade of -2% based on a Passing Sight Distance (PSD) of 700ft .(corresponding to a design speed of 45 mph), For Pasing Sight Distance, ASHTOO 2011 poicy assumes a driver eye height above the Roadway of 3.5 ft( i.e h1) and an object height of 3.5 (i.e h2),
Determine the minimum sight distance for a two-lane divided Highway in hilly terrain on a 4% descending grade. data as per IRC recommendations given are V=60kmph, f=0.36, t=2.5sec.