Grader working Temporary Class 1 Retro Reflective Road sign (TW337) safety first shaft sign and access points where “very

and access points where “very hot water” must be visible before action is taken

and refuelling points where “Flammable Material keep fire away” controls ignition sources

roadside activity

and short-term hazard zones

Warning stairs

Grader working Temporary Class 1 Retro Reflective Road sign (TW337) safety first shaft sign and access points where “veryThe Grader Working Temporary road sign (TW337) is a W Series temporary warning sign used to alert drivers that a grader is operating ahead. It warns of slow moving plant, changing road surfaces, loose material, and workers in the roadway. Purpose and function This sign provides advance warning so drivers reduce speed, increase following distance, and prepare for uneven surfaces or lane restrictions. It supports safer movement through roadworks and