New Roundabout (T1-21)The New Roundabout (T1 21) sign warns motorists of a recently installed or upcoming roundabout, helping drivers adjust speed and prepare for merging traffic safely. It is commonly used in roadworks, newly constructed intersections, or temporary traffic management zones to reduce accidents and improve traffic flow. Manufactured from yellow CL400 Class 1W reflective material, the T1 21 ensures excellent visibility during the day, night, and in all