The 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 maintenance zones where heavy machinery may enter or occupy the carriageway.
Typical applications
- Road grading and resurfacing operations
- Temporary maintenance zones on public roads
- Rural and gravel roads during re-shaping and blading
- Construction sites where plant operates near live traffic
Commonly used with
- Roadworks ahead Temporary road sign (TW336)
- General Warning Temporary road sign (TW339)
- Stop – Go road sign (R1.5)
Explainer guide
For how W Series warning signs are used and grouped, see our W Series warning road signs explainer.
Materials and ordering notes
- Class 1 retro reflective temporary road sign
- Enquire about our tripod stands for temporary installations
- Please confirm stock availability before ordering road signs
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