Turn On Hazard Lights When Queued (TC1992_1)The Turn On Hazard Lights When Queued (TC1992_1) traffic control sign is designed to instruct motorists to activate their hazard lights when waiting in traffic near roadworks or construction zones. Manufactured with super bright traffic yellow CL400 Class 1W reflective material, it provides maximum visibility both day and night, helping improve safety by increasing vehicle visibility in queues. This sign is available in 900 x 600 mm and 1200 x 900 mm