A spiral easement curve has a length of 100m with a central curve having a radius of 310 m. The width of the road is 10m and design speed is 81 kph? a) What is the throw? (in meters) b) What is the spiral angle at the endpoints? (degrees) c) What is the spiral deflection angle at the endpoints? (in degrees) d) What is the superelevation at the central curve? (in meters) e) What is the offset distance from the tangent to the 3rd-quarter point of the spiral? (in meters)

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Q: what is the superelevation at the central curve? in meters

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Intersection Design

An intersection is a location where two or more roads or railways meet or join. The traffic movement is controlled at the intersection that depends on its design and type. It governs the operation, efficiency, speed, capacity, and safety of the highways, airways, and railways. The movement of the pedestrian causes hazards and delays at the intersection.