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Applicability of winter friction measurements in Ontario Cloutier, Matthew ; Donaldson, Laura

By: Contributor(s): Publication details: Kingston, ONT Ontario Ministry of Transportation. Eastern Region Contracts Office, 2007Description: 66 sSubject(s): Online resources: Abstract: In the winter of 2006/07, the Eastern Region Contracts office carried out a study to explore the applicability of winter friction testing. The primary objective of Eastern Region’s portion of the project was to determine if a consistent correlation could be found between the road surface condition (e.g. bare and wet, snow covered, icy, etc) and the coefficient of friction. It was proposed that the development of a reliable, repeatable relationship could potentially lead to Province-wide adoption of friction-based performance measures for defining bare pavement. There were many secondary objectives for the devices specified by Head Office, most were to use friction measurements to assess new technologies and maintenance methods to gain inferences on their effectiveness. Valuable data was recorded on a number of issues that could only be speculated on in the past. A jurisdictional scan was completed to identify agencies already using winter friction as part of their current maintenance policy. A detailed overview of winter maintenance practices, and specifically the use of winter friction, was provided for Ontario, Norway, and Ohio. Data collection was commenced after the devices arrived from Norway in January and continued until early March. In total, approximately 2,500 kilometers of data was accumulated during this time period. It was concluded that the concept of measuring road performance during and after winter events with a quantifiable and objective measure aligns well with the strategic direction of the Ministry of Transportation (MTO). Furthermore, the development of a mock specification for bare pavement friction values could be carried out in the short-term to assess if it is feasible to replace the current visual bare pavement standard with a benchmark friction number to be reached at the end of an event. Modifications could be made to refine the standard to a value that reflects bare, wet pavement in Ontario. It was recommended that the use of friction measurements should be further researched by MTO and the maintenance industry in Ontario as a whole. Additionally, refinements to the testing protocol should be made in concert with MTO provincial office, the host region of the testing program and the equipment supplier to modify the equipment/software to best meet the needs of MTO.
Item type: Reports, conferences, monographs
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In the winter of 2006/07, the Eastern Region Contracts office carried out a study to explore the applicability of winter friction testing. The primary objective of Eastern Region’s portion of the project was to determine if a consistent correlation could be found between the road surface condition (e.g. bare and wet, snow covered, icy, etc) and the coefficient of friction. It was proposed that the development of a reliable, repeatable relationship could potentially lead to Province-wide adoption of friction-based performance measures for defining bare pavement. There were many secondary objectives for the devices specified by Head Office, most were to use friction measurements to assess new technologies and maintenance methods to gain inferences on their effectiveness. Valuable data was recorded on a number of issues that could only be speculated on in the past. A jurisdictional scan was completed to identify agencies already using winter friction as part of their current maintenance policy. A detailed overview of winter maintenance practices, and specifically the use of winter friction, was provided for Ontario, Norway, and Ohio. Data collection was commenced after the devices arrived from Norway in January and continued until early March. In total, approximately 2,500 kilometers of data was accumulated during this time period. It was concluded that the concept of measuring road performance during and after winter events with a quantifiable and objective measure aligns well with the strategic direction of the Ministry of Transportation (MTO). Furthermore, the development of a mock specification for bare pavement friction values could be carried out in the short-term to assess if it is feasible to replace the current visual bare pavement standard with a benchmark friction number to be reached at the end of an event. Modifications could be made to refine the standard to a value that reflects bare, wet pavement in Ontario. It was recommended that the use of friction measurements should be further researched by MTO and the maintenance industry in Ontario as a whole. Additionally, refinements to the testing protocol should be made in concert with MTO provincial office, the host region of the testing program and the equipment supplier to modify the equipment/software to best meet the needs of MTO.