Roadwork Ahead (T1-1)The Roadwork Ahead (T1 1) sign is one of the most widely used traffic control signs in Australia, providing clear warning to motorists that roadworks or construction activities are taking place ahead. It helps drivers reduce speed, stay alert, and navigate safely, protecting both road users and workers. Manufactured from yellow CL400 Class 1W reflective material, the T1 1 sign ensures outstanding visibility during the day, at night, and in adverse