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Cautionary / Warning Signs

Equilateral Triangular Hazard Alert Signs to Warn Motorists in Advance. Triangular warning sign boards designed according to IRC 67 to alert drivers of upcoming physical road hazards, intersections, curves, pedestrian crossings, and school zones.

Available Product Models

11 Models Available
Sharp Left Hand Curve Warning Sign

Sharp Left Hand Curve Warning Sign

Equilateral triangular cautionary sign alerting drivers to upcoming leftward roadway curvature requiring speed deceleration.

Size:750mm or 900mm Equilateral Triangle
Standard:IRC 67 Sign Type W-1
Sheeting:High-Intensity Microprismatic (Type IV / XI)
Sharp Right Hand Curve Warning Sign

Sharp Right Hand Curve Warning Sign

Triangular hazard alert sign cautioning motorists of approaching sharp right-hand curve ahead.

Size:750mm or 900mm Equilateral Triangle
Standard:IRC 67 Sign Type W-2
Sheeting:High-Intensity Microprismatic Sheeting
Left Reverse Bend Warning Sign

Left Reverse Bend Warning Sign

Warns drivers of consecutive reverse bends, turning first to the left and then to the right.

Size:750mm / 900mm Triangle
Standard:IRC 67 Sign Type W-3
Background:White Microprismatic Sheeting
Speed Breaker / Hump Ahead Warning Sign

Speed Breaker / Hump Ahead Warning Sign

Warns motorists of impending speed breaker hump or physical pavement elevation change ahead.

Size:600mm / 750mm Triangle
Standard:IRC 67 Sign Type W-20
Reflective Grade:Type IV High-Intensity Prismatic
Pedestrian Crossing Warning Sign

Pedestrian Crossing Warning Sign

Alerts motorists to approach zebra crossings with caution and yield right-of-way to crossing pedestrians.

Size:600mm / 750mm Equilateral Triangle
Standard:IRC 67 Sign Type W-27
Background:High-Intensity Prismatic White or Fluorescent Yellow-Green
School Ahead Cautionary Sign

School Ahead Cautionary Sign

Warns motorists of upcoming school zone and children crossing, mandating immediate speed reduction.

Size:600mm / 750mm Triangle
Standard:IRC 67 Sign Type W-28
Reflective Sheeting:Fluorescent Yellow-Green Microprismatic
Side Road Left Intersection Warning Sign

Side Road Left Intersection Warning Sign

Cautionary sign indicating a side road joining the priority carriageway from the left side.

Size:600mm / 750mm Triangle
Standard:IRC 67 Sign Type W-8
Sheeting:High-Intensity Microprismatic (Type IV)
Railway Level Crossing Warning Sign

Railway Level Crossing Warning Sign

Warns road users of approaching guarded or unguarded rail track level crossing.

Size:750mm / 900mm Triangle
Standard:IRC 67 Sign Type W-31 / W-32
Border:Red Retro-Reflective
Sharp Curve Chevron Alignment Sign

Sharp Curve Chevron Alignment Sign

High-visibility arrow chevron delineator marker guiding drivers smoothly through sharp horizontal highway curves.

Dimensions:450mm x 600mm / 600mm x 750mm Rectangular Chevron
Standard:IRC 67 Alignment Delineator Sign
Colors:Black arrow on High-Intensity Yellow or White background
Object Hazard Marker Sign

Object Hazard Marker Sign

Striped hazard marker warning drivers of physical bridge abutments, culvert headwalls, and roadway obstructions.

Dimensions:300mm x 900mm Vertical Panel
Stripes:Alternating 45-degree Black and Reflective Yellow stripes
Standard:IRC 67 Section 17 (Hazard Markers)
Two-Way Hazard Divider Marker Sign

Two-Way Hazard Divider Marker Sign

Inverted chevron dual-directional marker installed at median noses and traffic dividing islands to guide traffic on either side.

Dimensions:600mm x 600mm or 450mm x 900mm
Design:Inverted V-stripes (Black on Retro-Reflective Yellow)
Standard:IRC 67 Section 17.2

What is Cautionary / Warning Signs?

Cautionary or warning signs inform drivers in advance of impending roadway conditions, geometry changes, or hazards that require reduction of speed or heightened caution. As prescribed by IRC 67, they are equilateral triangles with red borders, white or yellow backgrounds, and black symbols.

How and Why It Works

Positioned at calculated reaction distances ahead of hazards, the high-contrast red border immediately registers in the driver peripheral vision. Under headlight illumination, the prismatic retro-reflective background reflects light back to the driver for rapid hazard perception.

Why Choose Our Cautionary / Warning Signs

  • Accurate equilateral triangle geometry specified in IRC 67 standards
  • Vivid red border retro-reflectivity with high optical contrast
  • Precision symbol reproduction matching official IRC 67 glyphs
  • Corrosion-resistant aluminum substrate for extended field longevity
  • Available in standard sizes: 600mm, 750mm, and 900mm

Specifications

ParameterStandard / Engineering Specification
ShapeEquilateral Triangle (apex pointing upward) & Hazard Delineator Rectangles
Standard Dimensions600mm, 750mm, 900mm side lengths (as per road speed category)
Border ColorTraffic Red (Retro-Reflective)
Background ColorWhite or Fluorescent Yellow-Green (School/Pedestrian Zones)
Symbol ColorBlack (Screen printed overlay film)
Reflective SheetingType IV / Type XI Prismatic Sheeting
SubstrateAluminum Composite Panel (ACM) or GI Sheet

Where to Use

Sharp Curves, Hairpin Bends, and Steep Hills
Uncontrolled Intersections and Roundabouts
School Zones, Hospitals, and Pedestrian Crossing Zones
Railway Level Crossings and Narrow Bridge Approaches
Construction and Highway Maintenance Work Zones

Frequently Asked Questions: Cautionary / Warning Signs

Technical guidance regarding IRC 67 compliance, sheeting grades, and installation.

Under international and Indian road conventions (IRC 67), the equilateral triangle with apex pointing upward is designated exclusively for warning and cautionary signs so drivers instantly recognize hazard alerts even before reading symbols.

Request Specifications & Pricing for Cautionary / Warning Signs

We provide official tender compliance sheets, BOQ quotes, and material test certificates for road projects across India.