Slippery When Wet Sign

Introduction

Driving in adverse weather conditions demands extra caution. To help warn motorists of road surfaces that may become hazardous, Canada uses the Slippery When Wet sign. This warning sign is especially important during rain, snow, or ice and is part of the knowledge required for the Ontario G1 driving test.

What Does the Slippery When Wet Sign Mean?

The Slippery When Wet sign is a yellow diamond-shaped warning sign that features:

• A car with wavy skid marks beneath it

• Often depicted with water droplets or skid trail indicators

This sign warns that the road surface may become slippery when wet, and that drivers should reduce speed and drive with caution.

Where Are Slippery When Wet Signs Typically Placed?

These signs are positioned in areas where traction may be compromised due to weather or surface conditions, including:

• Bridges or overpasses, which freeze faster than roadways

• Shaded curves and hills, where water or ice may linger

• High-accident zones during rainfall or snow

• Concrete or metal surfaces (e.g., manhole covers or plates)

• Construction zones with temporary surfaces

Placement follows guidelines set by the Ontario Traffic Manual (OTM) Book 6 to enhance driver awareness and reaction time.

How Should Drivers Respond to the Slippery When Wet Sign?

When approaching this sign, drivers should:

• Reduce speed and avoid sudden movements

• Avoid hard braking or sharp turns

• Increase following distance

• Be especially cautious in rain, snow, sleet, or near freezing temperatures

• Consider using winter tires during the colder seasons

Failing to heed this warning may result in:

• Loss of control or hydroplaning

• Rear-end or side-swipe collisions

• Increased stopping distances and poor traction

Visual Representation of the Sign

The sign shows a black car with wavy skid marks, surrounded by small black droplets or circles, all set against a yellow diamond background—a strong visual cue of caution.

Conclusion

The Slippery When Wet sign is a crucial warning for navigating wet or icy roads safely. Whether you’re driving through rain-soaked curves or approaching a frosty bridge in winter, recognizing this sign helps you adjust your speed and stay in control. It’s an essential part of road safety and a key topic on the Ontario G1 test.