Defination of Horizontal Alignment

When we provide curve between two tangent that meeting together at any angel is called horizontal alignment. Horizontal Alignment. It is defined as straight segments of the roads, which are connected by the suitable curves. ... Horizontal curve is designed on the basis of driver limitations, curve radius, profile, cost, vehicle characteristics, and design speed and design considerations.


Image of horizontal alignment


     What is horizontal alignment in road design?

Horizontal alignment in road design consists of straight sections of road, known as tangents, connected by circular horizontal curves. Circular curves are defined by radius (tightness) and deflection angle (extent). ... Using AASHTO standards, an engineer works to design a road that is safe and comfortable.
What are the types of horizontal curve? 

Types of Horizontal Curve; 

Simple Curve: A simple arc provided in the road to impose a curve between the two straight lines.Compound Curve: Combination of two simple curves combined together to curve in the same direction.Reverse Curve: ... Transition or Spiral Curve: ... Sag Curve. ... Crest Curve/Summit Curve

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