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Horizontal Level and Line of Sight

On sag or val...

Question

On sag (or valley) curves the available sight distance is determined based on

A

night-time driving conditions

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B

height of obstacle

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C

design speed

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D

height of driver eye

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Solution

The correct option is A night-time driving conditions
Sight distance depends upon height of the headlight i.e., 0.75 m. Which in turn is used only in night-time driving conditions.

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