Winter accident experience in Ontario with and without studded tyres. Paper presented at the 52nd Annual Meeting of the Highway Research Board HRB, Washington, D.C., January 1973.

Total collision and personal injury accidents on the highways of Ontario during the winter of 1971-72 (without studded tyres) are compared with those during the previous winter (with studded tyres). Analysis is made, both overall and on regional basis, of the specific road condition reported at the accident site and the condition generally prevailing. In spite of the general upward trend, summer and winter, in highway accidents, the proportion of accidents on icy, snow-packed, snow, or slushy roads declined following discontinuance of the use of studded tyres.