A highway reconstruction project is being undertaken to reduce crash rates.  The reconstruction involves a major realignment of the highway such that a design speed of 100km/h attained. At one point on the highway, a 245m equal-tangent crest vertical curve exists. Measurements show that at 0+107.3 stations from the PVC, the vertical curve offset is 1 meter. Assess the adequacy of this existing curve in light of the reconstruction design speed of 100km/h and if the existing curve is inadequate, compute a satisifactory curve length.

Q: A curve of radius 250 ft and e = 0.08 is located at a section of an existing rural highway, which…

A: We have to find out the mnimum radius of curve for safe speed. We will use the formula  R =…

Q: A highway reconstruction project is being undertaken to reduce accident rates. The reconstruction…

A: Given data - v = 50 mph L = 800 ft x = 3+52 ft = 352 ft Offset (Y) = 3 ft Find out - if the existing…

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A: Solution:-

Q: 3. What is AASHTO's recommended perception reaction time (s)?

A: Reference : AASHTO, American Association of State Highway and Transportation To determine : AASHTO…

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A:

Q: comply with the SSD. 6. A grade g₁ of +3.50% intersects grade g₂ of -2.50% and an equal-tangent…

A:

Q: 5. A horizontal curve on a six-lane highway has a radius of 1400 ft and 12 ft per lane. The highway…

A: Given:- The radius of the horizontal curve = 1400 ft The width per lane = 12 ft The design speed =…

Q: tangent vertical curve is intended to connect grades of 3.6% and -3.2%. If this curve is to be a…

A:

Q: There is a need for conducting a design check for a horizontal curve (flat terrain) for an…

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Q: A horizontal curve on a two-lane highway is designed with a 610-m radius, 3.5-m lanes, and 80 kph…

A:

Q: 5. What is the assumed height (ft) of the driver's eye for passenger cars?

A: Explanation :  The driver's eye distance/ height of driver's eye for passanger cars is the vertical…

Q: While designing a hill road with a ruling gradient of 6%, if a sharp horizontal curve of 50 m radius…

A: Ruling gradient =6%, Radius of the curve R=50 m, It is needed to find the value of the compensated…

Q: (3) Thinking about Stopping Sight Distance (SSD), answer the following: o Determine what the design…

A: Stopping Sight Distance (SSD) is the minimum distance required for a driver to perceive an obstacle,…

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A:

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