Problem Diagnosis
Road Corrugations
Road corrugations concern both the wearing material and traffic interaction. Dragging loose peaks into hollows can improve appearance temporarily while leaving the cause unchanged.

Plan the surface handover
BeforeAssess aggregate condition, drainage and the depth of the corrugated layer.
Work stageUse an appropriate maintenance method to rework and shape suitable material, not merely skim the peaks.
AfterCompact and manage traffic as required by the road-maintenance plan.
What to verify
Check that the profile and edge drainage are restored.
Diagnosis should distinguish the visible symptom from its cause. Record whether the fault appeared after traffic, a water event, settlement or earlier earthworks. That history helps decide whether the response is a local surface correction, a drainage intervention or a more substantial investigation.
Scope and limits
Persistent corrugation may need material or maintenance-method changes.
Continue the job brief
Include the location, existing condition, intended surface, material, available tractor and proposed dates.
