Indian dip sign

A triangle showing a hollow in the road.

Also known as: Sunken road warning, Hollow ahead sign

Road & transportStandard profile

Meanings

The Indian cautionary sign warning of a dip or sudden hollow in the carriageway.

Officially standardisedVerified fact
Warns of a dip or sudden hollow in the carriageway.
Contexts: Road signage
Officially standardisedVerified fact
Mirrors the hump sign, the pair using an upward and a downward curve of the same line to sign opposite defects.
Contexts: Road signage

A bordered triangle containing a downward curve in a line that is otherwise level.

IdentityHigh confidence: High confidence because the identity is defined by a current official standard, but only a single source has been found so far.
Historical originLow confidence: Low confidence because the historical origin is documented in encyclopedic references, but only a single source has been found so far, but early or supporting evidence is limited, but the regional or cultural match to this specific claim is not precise.
Current useHigh confidence: High confidence because the current use is defined by a current official standard, but only a single source has been found so far.
Visual matchModerate confidence: Moderate confidence because the visual match is documented in encyclopedic references, but only a single source has been found so far.

IRC:67, Code of Practice for Road Signs
Indian Roads Congress · retrieved 2026-08-25
The Indian national code of practice for road signs, which defines the mandatory, cautionary and informatory sign families, their shapes, and their meanings. Cited for a sign's identity and defined meaning. Records are descriptive and are not a statement of any road user's legal obligation, which is fixed by the Motor Vehicles Act and its rules.

Last reviewed 2026-08-24

Meanings

The Indian cautionary sign warning of a dip or sudden hollow in the carriageway.

Officially standardisedVerified fact

Warns of a dip or sudden hollow in the carriageway.

Officially standardisedVerified fact

Mirrors the hump sign, the pair using an upward and a downward curve of the same line to sign opposite defects.

Confidence

IdentityHigh confidence: High confidence because the identity is defined by a current official standard, but only a single source has been found so far.
Historical originLow confidence: Low confidence because the historical origin is documented in encyclopedic references, but only a single source has been found so far, but early or supporting evidence is limited, but the regional or cultural match to this specific claim is not precise.
Current useHigh confidence: High confidence because the current use is defined by a current official standard, but only a single source has been found so far.
Visual matchModerate confidence: Moderate confidence because the visual match is documented in encyclopedic references, but only a single source has been found so far.

Sources

IRC:67, Code of Practice for Road Signs
Indian Roads Congress · retrieved 2026-08-25
The Indian national code of practice for road signs, which defines the mandatory, cautionary and informatory sign families, their shapes, and their meanings. Cited for a sign's identity and defined meaning. Records are descriptive and are not a statement of any road user's legal obligation, which is fixed by the Motor Vehicles Act and its rules.

Last reviewed 2026-08-24