On level LV, level 1 and level 2 roads where there is a hazard on a footpath or cycle lane, amber flashing warning lamps may be placed on any barricades and fences.
A lamp may also be placed on each corner of the barricade/fence, to help make the worksite and hazard more identifiable. If there is insufficient lighting to highlight the approach pathway and any hazards on the path, then amber flashing warning lamps must be installed.
Amber flashing warning lamps must be capable of maintaining their flashing mode throughout the night.
Amber flashing warning lamps must be clearly visible from a height of 1.1m to 2.4m over a distance ranging from 0m to 600m from the light.
Amber flashing warning lamps may also be used as part of the advance warning for the worksite.
When used in this manner they must be placed so that the nearest edge is at least 500mm clear of the travelled path of vehicles for level LV and level 1 roads, and at least 1250mm clear of the travelled path of vehicles for level 2 and 3 roads.
Check the COPTTM requirements yourself here.