Highway Maintenance Response Time Standards

TPW - Winter Maintenance StandardsRO90 - 104/105/106 Snow and Ice ControlMaintenance Standards.The use of deicer is to be controlled, in terms of both quantity and frequency, tomeet the specified level of service.Sand shall not normally be applied on Level 1A highways. Sand shall only beapplied to Level 1A highways during severe cold weather when extremelyslippery conditions exist.A summary of Level 1A service is shown in the Levels of Service SummaryTable.II.Level 1B - Essentially Bare PavementThe defined level of service for Level 1B is essentially bare pavement, and is theobjective to be reached, as soon as possible after the storm has ended or abated,normally within twelve (12) hours . This level of service applies to all Trunkhighways and other selected highways with an average daily traffic volumebetween 7,500 and 4,000 vehicles per day. To achieve this level of service, theOperations Supervisor shall remove snow and apply deicer as described in theseMaintenance Standards.The use of deicer is to be controlled, in terms of both quantity and frequency, tomeet the specified level of service.Sand is to be applied to all roads or sections of a road designated as being inenvironmentally sensitive areas. The use of salt in environmentally sensitive areasis strictly prohibited.Sanding of environmentally sensitive areas shall take place at the beginning of astorm and shall be discontinued after 50mm of snowfall accumulation. Sandingwill normally resume after a snowfall.A summary of Level 1B service is shown in the Levels of Service SummaryTable.III. Level 2 - Centre Line Bare 2.5m to 5.0mThe defined level of service for Level 2 is a minimum centre line bare conditionof 2.5m to 5.0m wide, and is the objective to be reached as soon as possible afterthe storm has ended or abated, normally within twelve (12) hours and bemaintained until conditions permit baring the pavement full width. This level ofservice applies to all 200 and 300 series Routes and other selected highways withan average daily traffic volume between 4,000 and 1,500 vehicles per day. ToDecember 1, 2001