Highway Maintenance Response Time Standards

TPW - Winter Maintenance StandardsRO90 - 104/105/106 Snow and Ice ControlLevels of Service Summary TableLEVEL OF SERVICE Level 1A Level 1B Level 2 Level 3 Level 4Type of Road- All 100 Series- Selected highvolume highways- All Local PavedRoads- All Gravel Roads- All Trunks- Selectedhighways as perAADT limits- All Routes- Selectedhighways as perAADT limitsAADT Limits > 7,500 7,500 - 4,000 4,000 - 1,500 < 1,500Primary objectiveEssentially BarePavement* 1Essentially BarePavement* 1Centre Line Bare2.5m to 5.0mCentre Line Bare1.2m to 2.5m Snow PackedTime to meet primaryobjective after end ofstorm, not exceeding 8 hrs 12 hrs 12 hrs 24 hrs 24 hrsSalting- Application of salt Beginning ofstorm andduring as requiredBeginning ofstorm andduring as requiredBeginning ofstorm andafterBeginning ofstorm whererequired andafterMax. Application Rate(Rate based on 2-LaneRoad) 125 kg/CL km 125 kg/CL km 110 kg/CL km 85 kg/CL km N/APlowing- Begin plowing whensnow accumulation- Max allowableaccumulationSanding-Application of sand 25mm 25mm 50mm During storm asrequiredN/ADuring storm asrequired 75mm 100mm 150mm 200mm 200mm- Not normally Beginning of Beginning of - Beginning of - After stormsandedstorm forstorm forstorm where - For- Sand only during environmentally environmentally required and environmentallysevere cold with sensitive areas sensitive areas aftersensitive areasslippery conditions oror- For- Slipperyduring severe cold during severe cold environmentally conditionswith slippery with slippery sensitive areas when requiredconditions conditions - Slipperyconditionswhen requiredMax. Application Rate(Rate based on 2-LaneRoad)N/A 800 kg/CL km 800 kg/CL km 500 kg/CL km 500 kg/CL km* 1 At cold temperatures below -10C in the day and -7C in the night when deicing methods areno longer effective, with prior approval from the Area Manager, the Operations Supervisor shalluse sand or other approved abrasive materials to maintain an even surface free of loose snowwith satisfactory friction. A roadway free of snow and ice is considered always to havesatisfactory friction. A snow covered roadway has satisfactory friction if permitted vehicles canbe driven on it with safety.December 1, 2001