Also see Road Safety Statistics:
http://www.tc.gc.ca/roadsafety/Stats/statsi_e.htm

Statistics Canada news release on crime data includes impaired driving convictions:
http://www.statcan.ca/Daily/English/020717/d020717b.htm

The Mothers Against Drunk Driving web site also includes data on impaired driving accidents:
http://madd.ca/library/stats.htm

Report Card on Big Truck Safety by Province: April 1999 http://www.web.net/~crash/reports/bigtruck.html