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Question

The sight distance available on a road to a driver at any instance depends on :
A. Features of the road ahead
B. Height of the driver's eye above the road surface
C. Height of the object above the road surface
Choose the correct answer from the options given below :

This question was previously asked in
CUET PG 2026 Agri-Business Management Question Paper (25-Mar-2026) (Shift 2)
The correct answer is
A, B and C

Factors Determining Road Sight Distance

The sight distance available to a driver at any moment is influenced by several variables related to the road geometry, the driver's position, and the object being viewed.

Analysis of Factors

  • Features of the road ahead: The alignment (horizontal curves, vertical curves like crests), presence of obstructions (buildings, vegetation, parked vehicles), and gradient of the road significantly limit or enhance the distance a driver can see.
  • Height of the driver's eye: The vertical position of the driver's eye above the road surface affects the line of sight, particularly when negotiating vertical curves or viewing objects over obstructions. A standard height is often assumed in calculations.
  • Height of the object: The height of the object (e.g., a vehicle, pedestrian, or traffic sign) relative to the road surface determines if it is visible, especially over crests or around curves. A minimum standard height is typically considered.

Therefore, all three factors – the road's features, the driver's eye height, and the object's height – are critical in determining the available sight distance.

All factors A, B, and C are essential.

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  5. Who among the following political thinkers consider the anarchical self help system to be a compelling factor for States to maximise their relative power positions?

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