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  • Maintenance 2001 Project - 2000-2001: 5th Season
    for pre wetting salt was developed for pilot implementation Top of page 2000 2001 Test Plan Decision Support Tools DART verification after determining required adjustments DART will be integrated with ARWIS based on the results of this winterÕs tests the material application recommendations given by DART will be evaluated against ministry test results from last winter and this winter program output will be compared with the results of the anti icing pre wetting evaluations and changed as required Advanced Road Weather Information System ARWIS planning will continue for a network expansion in 2000 01 02 access to ARWIS will be improved by direct link with an internet site operated by Environment Canada and by display as a component of an AVL system see below Infra red Thermometer an infra red thermometer will be used to acquire data for thermal mapping on 400 series highways allowing for future development of a Local Climatological Model to improve road weather forecasts Top of page 2000 2001 Test Plan Performance Standards and Quality Assurance Tools Snow cover on road surface the use of video as a method of measuring snow coverage will be evaluated in relation to existing performance standards evaluation will consider analogue and digital technologies for video imaging and archiving automated methods of measuring snow cover from video and sampling requirements in space and time Winter friction on road surface the use of surface friction measurements as a quality assurance tool will be evaluated in relation to existing performance standards evluation will consider methods and equipment for measuring surface friction relation between friction and snow cover and sampling requirements in space and time Top of page 2000 2001 Test Plan Advanced Winter Maintenance Procedures Pre wetting Objectives reduce costs of winter maintenance and improve levels of service through better timing of operations use of liquid and granular anti icing de icing materials and appropriate variation in application rates Anti Icing Objectives Prevent snow and ice from forming a bond with the pavement surface by applying de icing chemicals to the road shortly before the onset of a storm which increases traffic safety and lessens environmental impacts by reducing de icing chemicals necessary for winter operations Continued anti icing testing using liquid de icing chemicals Alternative De icers several de icing liquids will be compared for use in pre wetting sodium chloride brine magnesium chloride brine calcium chloride brine ÒMagic 0Ó proprietary chemical optimum rates of liquid application are also being investigated Winter Sand Objective improve the level of traction provided by spreading sand on packed snow or ice by retaining it on the surface longer after spreading two methods are being investigated optimizing the size gradation of the sand pre wetting the sand with a small quantity of liquid de icer Flexible Snow Plow Blade Objective reduce the need for applying salt by improving the effectiveness of plowing the flexible plow blade is designed to provide better contact with the pavement leaving a thinner film of snow behind than a rigid plow

    Original URL path: http://www.mto.gov.on.ca/english/transtek/m2001/00-01fs.shtml (2014-08-11)
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  • ARWIS Network Map
    Management Transportation Technology Transfer Maintenance Technology Project ARWIS Network Map Text size Search Search ARWIS Network Map Click to view larger image Home Search Site Map Accessibility Français Contact us This site is maintained by the Government of Ontario Privacy

    Original URL path: http://www.mto.gov.on.ca/english/transtek/m2001/armap.shtml (2014-08-11)
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  • Maintenance 2001 Project - 1999-2000: 4th Season
    section changes in snow cover and in surface friction over time will be closely monitored in these areas surveillance videos and street lights are located at six of the test sites recorded images are stored on a computer every 5 minutes cameras are focused almost vertically at the surface and are not intended or equipped for traffic surveillance Trois domaines de programmes Decision Support Tools Advanced Winter Maintenance Procedures and Equipment Performance Standards and Quality Assurance Tools Top of page Summary and Results from 1998 1999 Season 1 Decision Support Tools Advanced Road Weather Information Systems ARWIS ARWIS moving from testing phase to province wide implementation two ARWIS will continue to be used in the project on Hwy 21 one is between Allenford and Elsinore and the other is approximately 4 km south of Port Elgin these systems measure air temperature humidity wind speed direction precipitation road surface temperature and the concentration of road salt on the surface and provide a 24 hour forecast of surface freezing and snow accumulation ARWIS is being installed at 60 sites across Ontario s freeway system over the next two years Infra red Thermometers IRT the use of these remote sensing devices are being implemented province wide in vehicles operating out of all Ministry patrol yards this fall measure road surface temperatures as well as air temperature detect problems with icing on bridge decks and shaded sections of highway De icing Anti icing Response Treatment Program DART a computer program which uses state of the art knowledge of anti icing and de icing methods to guide operations personnel in selection of the most effective snow and ice control operations now a completely functional program the objective is to have a PC decision tool with links to ARWIS to assist in selecting the most cost effective operation and chemical application rates for the conditions 2 Advanced Winter Maintenance Procedures Pre wetting System Liquid Controller Compuspread designed to be functional and user friendly in controlling the use of liquid anti icing de icing chemicals Brine Mixing Tank easy to operate improvements to overcome earlier problems in loading pump operation and leakage during second year of operation tank s straight sides became bowed from pressure in brine compartment and were reinforced with steel beams 3 Performance Standards and Quality Assurance Tools Norsemeter testing complete on the Norsemeter Surface Friction trailer and it is now being used to measure friction during de icer and winter sand tests motorists will see the friction devices being towed by a test van also equipped with infra red thermometers a Global Positioning System GPS unit and a video camera system Top of page 1999 2000 Test Plan 1 Decision Support Tools DART verification current research on DART has two objectives determine adjustments required to better integrate ARWIS and DART systems evaluate the material application recommendations given by DART against ministry test results from last winter program output will be compared with the results of the anti icing pre wetting evaluations and changed

    Original URL path: http://www.mto.gov.on.ca/english/transtek/m2001/99-00fs.shtml (2014-08-11)
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  • Open House
    opportunity for local media provincial police politicians and municipal engineers to see up close some of the new winter maintenance equipment and to find out how winter maintenance operations may be changing Here are some highlights An OPP officer looks at a spreader truck with Lindsay Busch Supervisor of Operations at the site Guests had the opportunity to ask questions about the project equipment and testing A plough truck complete

    Original URL path: http://www.mto.gov.on.ca/english/transtek/m2001/ophouse.shtml (2014-08-11)
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  • Maintenance 2001 Project - 1998-1999: 3rd Season
    application rates were applied using dry salt pre wet salt liquid salt and alternative chemicals The methods of spreading included windrow and broadcast The Tyler Zero Velocity Spreader was found to be effective at spreading salt in windrows at up to 70 km h exceeding traditional spreader speeds of 32 48 km h effective for dry or pre wet material approximately 90 of material remained on the road operationally reliable not effective at spreading winter sand at required application rates or at varying spread width during operation Etnyre brine spreader A ground speed controlled spray system manufactured by Etnyre was used to spread liquid salt under conditions of light snow and temperatures of 50C or warmer The unit was capable of spraying up to three traffic lanes at once but the reactions of oncoming drivers limited its use to a single lane at one time Automated Vehicle Location AVL systems were installed on spreader plow and monitoring vehicles in the test area Systems developed by TRAXIS and by Compuspread collected GPS information on vehicle location and speed while other sensors recorded material application rates The information was downloaded to an archive and display system at intervals through the season An additional component of the TRAXIS system to record movement of snow across the plow blade was not successful Infrared thermometers IRT IRTs installed on ministry patrol vehicles were used to determine actual pavement temperatures The Sprague units used in 1997 98 were within 20C of the actual surface temperature on bare and wet surfaces when the actual temperature was between 20C and 50C once the sensors reached ambient temperature Larger differences occurred at colder temperatures Patrol staff found them to be highly valuable in understanding the differences in pavement conditions during a snow storm As a result of the sound endorsement by patrol staff province wide implementation of IRTs on patrol vehicles is recommended 3 Tools for Monitoring Maintenance Activities and Performance After two seasons of operational experience using the Norsemeter Surface Friction prototype trailer in partnership with Transport Canada and the Norwegian Civil Aviation Authority three friction standard concepts for winter operations were developed The Norsemeter was also used in conjunction with video surveillance cameras and a spectral camera developed by SPAR Aerospace to help measure the effectiveness of sand and salting operations Top of page 1998 1999 Test Plan 1 Advanced Road Weather Information Systems ARWIS By the end of the winter season the province wide implementation of ARWIS will include a total of 18 sites at the following locations Kitchener Highway 401 Grand River Waterloo Highway 86 Connestoga River and Highway 7 8 Seaforth Highway 8 London Highway 401 Putnam Ostrander Highway 19 Barrie Highway 26 2 sites Woodstock Highway 401 Elginfield Highway 4 Strathroy Highway 402 Guelph Highway 401 QEW 5 sites between Fort Erie and St Catharines Ottawa Highway 7 Ashton Testing will include the evaluation of alternate hardware and forecast systems An ARWIS system by Lufft has been installed on Hwy 26 Continued testing

    Original URL path: http://www.mto.gov.on.ca/english/transtek/m2001/98-99fs.shtml (2014-08-11)
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  • Early Results
    Support Tool Temperatures reported by Sprague IRT were usually within 2 degrees C of actual surface temperatures once the device was equilibrated to outside air temperature IRT Plans for 1998 99 Begin Province wide implementation Evaluate Control Products IRT using same criteria Mobile Electronic Data Collection System MEDCS TRAXIS and Compuspread systems were used to collect Global Position vehicle speed and spreader operation data and displayed the collected data in

    Original URL path: http://www.mto.gov.on.ca/english/transtek/m2001/earlyresults.shtml (2014-08-11)
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  • Maintenance 2001 Project - 1997-1998: 2nd Season
    sites 3 ARWIS in Kitchener by the Ministry several ARWIS sites along Hwy 401 from Windsor to St Thomas by private contactor ministry installed ARWIS site linked to Regional Municipality of Ottawa Carleton network of RWIS sites 1997 98 partnership between MTO and Environment Canada which has an extensive network of Canadian weather stations Future Developments continued expansion of ARWIS sites across southern Ontario along Hwy 401 corridor Windsor Montreal corridor to be ARWIS populated partnerships with municipalities Ontario and outside provincial transportation agencies private contractors to install and ensure maintenance of instruments Components Atmospheric sensors measure air temperature relative humidity precipitation wind speed and direction Pavement sensors embedded in highway pavement and bridge decks measure road surface temperature monitor levels of precipitation wet ice snow or frost determine whether de icing chemicals are present or needed Video surveillance visual monitoring of roadway visibility and presence of precipitation Pavement forecast real time sensor information provided to meteorological service which combines data with weather forecast provides tailored forecast of pavement condition 24 hours in advance Top of page Advanced Winter Maintenance Procedures and Equipment Anti icing and Pre wetting Strategies anti icing early salt application to prevent adhesion of snow to the pavement and to allow plowing operations to be more effective using less material prewetting spraying sodium chloride brine on de icing materials before application on the road MTO has practiced anti icing strategies for 20 years using crushed salt at a standard rate of application and without benefit of pavement sensor information new anti icing procedures use detailed pavement information to determine when salt brine or other liquid chemicals should be applied to the road to help keep material on the road and enhance rate of melting alternatively finer gradation of salt applied at variable application rates key advantage to early application and to prewetting is potential to minimize use of de icing chemicals during storm de icing material may become effective quicker with more retained on the road liquid de icers may be more effective under conditions where air temperature falls below the dew point and pavement temperature is below freezing or in anticipation of light snow and temperatures slightly below freezing De icing Anti icing Response Treatment Program DART computer program under development for MTO to assist operational staff in selecting anti icing de icing methods appropriate to weather and pavement conditions maintains database of treatment effectiveness anti icing strategies based closely on Manual of Practice for an Effective Anti icing Program A Guide for Highway Maintenance Personnel published by U S Department of Transportation Federal Highway Administration 1996 requires input from ARWIS for strategy selection Test Site Equipment Liquid Spreader The Anti icer spray system consists of a 5670 litre tank with a series of nozzles mounted on a spray bar The system has a road speed sensor and an in cab mounted electronic controller The controller has five separate nozzle controls so that the operator can spray up to 3 lanes at a time The

    Original URL path: http://www.mto.gov.on.ca/english/transtek/m2001/97-98fs.shtml (2014-08-11)
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  • Maintenance 2001 Project - 1996-1997: 1st Season
    Background Information MTO installed 3 complete sensor sites pavement and atmospheric sensors in Kitchener area Hwy 401 at the Grand River Bridge Hwy 7 8 at the Homer Watson Bridge Hwy 86 at the Conestogo River Bridge these sites are not part of an information based maintenance management system Regional municipality of Ottawa Carleton installed 5 RPU sites 2 are complete sensor sites 3 are pavement sensors only this winter approximately 1200 compete sensor sites exist throughout the U S Canada Advanced RWIS definition an advanced RWIS is a network of weather data gathering and road condition remote sensing systems the addition of an ice detection prediction system which uses pavement and atmospheric sensors on site means that accurate pavement condition forecast information is available Components of advanced RWIS pavement forecast real time sensor information provided to meteorological service which combines data with weather forecast provides tailored forecast of pavement condition 24 hours in advanced atmospheric sensors measure air temperature relative humidity precipitation dew point wind speed and direction pavement sensors embedded in highway pavement and bridge decks measure road surface temperature monitor levels of precipitation wet ice snow or frost determine whether de icing chemicals are present or needed video surveillance visual monitoring of roadway visibility and presence of precipitation Top of page 2 Advanced Winter Maintenance Practices Anti icing Strategies definition early salt application to prevent adhesion of snow to the pavement and to allow plowing operations to be more effective using less material MTO has practised anti icing strategies for 20 years using crushed salt at a standard rate of application and without benefit of pavement sensor information now trying new procedures where salt brine or other liquid chemicals are applied to the road to help keep material on the road and enhance rate of melting they can be effectively employed only in conjunction with detailed pavement information alternatively finer gradation of salt applied at variable application rates key advantage to early application is potential to minimize use of de icing chemicals during storm Prewetting Strategies definition de icing materials are soaked with sodium chloride brine before application on the road de icing material may become effective quicker with more retained on the road key advantage to prewetting is potential to minimize use of de icing materials during storm Test Site Equipment Liquid Spreader The Anti icer spray system consists of a 5670 litre tank with a series of nozzles mounted on a bar The system has a road speed sensor and an in cab mounted electronic controller The controller has five separate nozzle controls so that the operator can spray up to 3 lanes at a time The controller displays the quantity of liquid per one lane km Pre wetting Spreader The Pre wet system consists of an electronic controller electric liquid pump tanks and nozzles This system sprays liquid brine or other solution on the salt or sand as it is being discharged from the spreader Various application rate settings are available Zero Velocity Spreader

    Original URL path: http://www.mto.gov.on.ca/english/transtek/m2001/96-97fs.shtml (2014-08-11)
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