Slippery Surface (T3-3)The Slippery Surface (T3 3) sign warns motorists of sections of road that may be slippery due to rain, oil, or other hazards, helping drivers reduce speed and maintain control. Ideal for roadworks, construction zones, and areas prone to wet or hazardous conditions, this sign improves driver awareness and safety. Manufactured from yellow CL400 Class 1W reflective material, the T3 3 ensures high visibility in all lighting conditions, day and night.