Appendix F - Intervention Levels Maintenance standards, as defined in the ministerial code of practice, are considered to be the levels of service or targets set by council consistent with its management of risks and available resources. These intervention levels are not intended to increase the level of service of a road, but are designed to maintain what already exists safely. Response Times (Refer Appendix E) RMC3 RMC4 RMC5 Defect Code Description of Defect and Intervention Level RMC1 RMC1 (Sealed (Minor (Limited (Link) (Collector) Access) Access) Access) 1.0 Obstructions in Traffic Lane (All Road Surfaces) Materials fallen from vehicles, dead animals, wet clay and other slippery substances, hazardous materials, accumulation of dirt or granular materials on the traffic lane of (sealed roads only) that pose a A A A B B OBS safety risk to vehicles.(i.e run off road, movement into oncoming lanes, loss of traction or braking capability) Traffic hazards requiring urgent response to ensure traffic safety - ponding of water >300mm deep, A A A B B OCC fallen trees, oil spills, stray livestock. A A A B B EM Emergency Event (e.g. road accidents resulting in debris on road surface) 2.0 Pavement or Surface Defects (Sealed Roads) Potholes in traffic lane of a sealed pavement greater than 300 mm in diameter and greater than 75 mm B C D D D S-POT deep. D D E E E S-DRO Edge drops/breaks onto unsealed shoulder greater than 100 mm over a 1.0 m length. Unsealed shoulder grading (to correct pavement drop off, build-up or rutting) where potholes or scouring D E E E F S-SHG exceed 75 mm in depth and 300 mm in diameter; or drop off from seal exceeds 75 mm. Wheel Rutting /Depressions/Corrugations in the traffic lane of a sealed pavement. Maximum depth E E E F F S-RUT under a 1.2 m straightedge exceeds 75 mm (requiring the application of a levelling course of asphalt(<25 m2)
Appendix F - Intervention Levels Maintenance standards, as defined in the ministerial code of practice, are considered to be the levels of service or targets set by council consistent with its management of risks and available resources. These intervention levels are not intended to increase the level of service of a road, but are designed to maintain what already exists safely. Defect Code Description of Defect and Intervention Level Response Times (Refer Appendix E) RMC1 (Link) RMC1 (Collector) RMC3 (Sealed Access) RMC4 (Minor Access) RMC5 (Limited Access) 1.0 Obstructions in Traffic Lane (All Road Surfaces) OBS Materials fallen from vehicles, dead animals, wet clay and other slippery substances, hazardous materials, accumulation of dirt or granular materials on the traffic lane of (sealed roads only) that pose a safety risk to vehicles.(i.e run off road, movement into oncoming lanes, loss of traction or braking capability) A A A B B OCC Traffic hazards requiring urgent response to ensure traffic safety - ponding of water >300mm deep, fallen trees, oil spills, stray livestock. A A A B B EM Emergency Event (e.g. road accidents resulting in debris on road surface) A A A B B 2.0 Pavement or Surface Defects (Sealed Roads) S-POT Potholes in traffic lane of a sealed pavement greater than 300 mm in diameter and greater than 75 mm deep. B C D D D S-DRO Edge drops/breaks onto unsealed shoulder greater than 100 mm over a 1.0 m length. D D E E E S-SHG Unsealed shoulder grading (to correct pavement drop off, build-up or rutting) where potholes or scouring exceed 75 mm in depth and 300 mm in diameter; or drop off from seal exceeds 75 mm. D E E E F S-RUT Wheel Rutting /Depressions/Corrugations in the traffic lane of a sealed pavement. Maximum depth under a 1.2 m straightedge exceeds 75 mm (requiring the application of a levelling course of asphalt(<25 m2) E E E F F
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