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On Roads, kerb indicate
Longitudinal slope of pavement
transverse slope of pavement
boundary between the pavement and shoulders
None of the above
boundary between the pavement and shoulders
A kerb is a raised edge or stone boundary placed along the periphery of a pavement to separate the carriageway from the shoulder, footpath, or verge. It provides structural support to the pavement edges and guides surface drainage runoff into gullies.
A kerb is a raised edge or stone boundary placed along the periphery of a pavement to separate the carriageway from the shoulder, footpath, or verge. It provides structural support to the pavement edges and guides surface drainage runoff into gullies.
HkerbтАЛ тАФ The height of the kerb usually ranges between 10 cm to 20 cm above the pavement level depending on the classification of the road.
The kerb acts as a physical barrier that defines the traffic lane and prevents encroachment onto the shoulder. By raising the pavement edge, it helps contain the pavement structure materials and directs water along the longitudinal drainage path, preventing subgrade saturation.
Kerbs provide lateral stability to the pavement layers.
They are essential for controlled surface water drainage.
Categorized mainly into Low-speed (mountable) and High-speed (barrier) kerbs.
They act as a visual boundary for motorists to delineate the edge of the travel lane.
Prevents erosion of the road shoulder by water runoff.
Provides safety to pedestrians by creating a physical barrier from traffic.
Improves the aesthetic appearance and structural integrity of the road edge.
Can cause vehicle damage if hit at high speeds (barrier type).
Increases construction and maintenance costs of the pavement edge.
Urban roads with sidewalks.
Parking areas and bus terminals.
High-traffic highway sections needing edge confinement.
Mountable kerbs are designed to be easily driven over, while barrier kerbs are designed to prevent vehicles from leaving the pavement.
Option A is incorrect as longitudinal slope is determined by gradients/camber.
Option B is incorrect as transverse slope (camber) is the cross-slope of the road surface itself.
C is correct тАФ Kerbs serve as the visual and physical boundary that delineates the pavement edge from the shoulder or footpath area.
Always remember: Kerbs are for containment and drainage (Geometric design), whereas shoulders are for emergency use and lateral support (Structural/Safety design).
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