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A blue circle carrying a horn device.
Also known as: Sound horn sign, Blow horn sign
The Indian mandatory sign requiring a driver to sound the horn, used on blind mountain bends.
Requires a driver to sound the horn, typically on approach to a blind bend on a mountain road.
Contexts: Road signage
Stands directly opposite the horn prohibited sign in the same schedule, so the network both requires and forbids the same action in different places.
Contexts: Road signage
A circle filled with a solid colour carrying the pale outline of a horn, without the red border of a prohibition.