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Minimum shoulder width for roads recommend by IRC is?
m
m
m
85 m
m
According to the Indian Roads Congress (IRC:73-1980), the minimum recommended shoulder width for all classes of roads is 2.5 meters. The shoulder serves as an emergency lane for stopped vehicles and provides lateral support to the pavement structure.
According to the Indian Roads Congress (IRC:73-1980), the minimum recommended shoulder width for all classes of roads is 2.5 meters. The shoulder serves as an emergency lane for stopped vehicles and provides lateral support to the pavement structure.
WshoulderтАЛтЙе2.5┬аm тАФ Minimum geometric standard for shoulder width in Indian highway engineering.
The shoulder is a transition zone between the roadway and the side slope. Its primary functions include facilitating traffic flow for broken-down vehicles, providing space for road maintenance equipment, and contributing to the structural integrity of the pavement by preventing edge collapse under heavy wheel loads.
Shoulders provide a safety buffer for emergency stops.
IRC specifies a minimum width of 2.5 meters to ensure safe parking away from moving traffic lanes.
Shoulders help in the effective drainage of the pavement surface.
In mountainous terrain, the IRC allows for reduced shoulder widths based on specific design requirements.
Increases the effective width of the road for emergency maneuvers.
Prevents edge raveling and structural failure of the main carriageway.
Provides a clear area for pedestrians and cyclists in rural areas.
Increases the initial cost of land acquisition and road construction.
Requires regular maintenance to prevent vegetation growth or edge drop-offs.
National Highways (NH)
State Highways (SH)
Major District Roads (MDR)
The 2.5 m standard is intended for two-lane roads; however, urban conditions or specific mountainous terrain might necessitate variations.
Option B, C, and D provide values lower than the IRC recommendation for general road design.
A is correct тАФ The Indian Roads Congress specifies 2.5 m as the minimum shoulder width to ensure safety and structural support.
Always verify IRC codes against specific terrain types (e.g., plain vs. mountainous), as design standards often relax in challenging topography.