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Highway Curves and Driver Safety

Highway curves are designed so that safety and comfort of the driver is maintained. There is a gradual change from a tangent to the start of a circular curve.

The outer edge is raised first until the outer half of the cross section is level with the crown (point B). Then, the outer edge is raised farther until the cross section is straight (point C). From there on, the entire cross section is rotated until the full super- elevation is attained (point E).

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Superelevated roads are typically employed on curves of rural highways and urban freeways. Rarely you will see them on local streets in residential, commercial, or industrial areas.

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Kanwarjot Singh

Kanwarjot Singh is the founder of Civil Engineering Portal, a leading civil engineering website which has been awarded as the best online publication by CIDC. He did his BE civil from Thapar University, Patiala and has been working on this website with his team of Civil Engineers.

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3 comments on "Highway Curves and Driver Safety"

ahmed says:

thank you about this important information

premkumar.A says:

I need to know how design the rural and Highway roads. i need to know the calculation and procedure from A to Z of Design. I need detailed design model.


I need to know design of highway on which curve like a ,b,c,d,e,f or any other how and why

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