Loose Surface Symbol (T3-9)The Loose Surface Symbol (T3 9) sign alerts motorists to sections of road where gravel, sand, or other loose materials may reduce traction. Ideal for roadworks, construction zones, and areas with temporary or permanent surface changes, this sign helps drivers reduce speed and maintain control. Manufactured from yellow CL400 Class 1W reflective material, the T3 9 ensures high visibility in all lighting conditions, day and night. Available in 900 x 600