%0 Conference Proceedings %B Proceedings of the 2009 Annual Conference of the Transportation Association of Canada %D 2009 %T Improvements in piezoelectric sensors and WIM data collection technology %A Xiaohua Jiang %A Shhram H Vaziri %A Carl Haas %A Leo Rothenburg %A Gerhard Kennepohl %A R Haas %B Proceedings of the 2009 Annual Conference of the Transportation Association of Canada %G eng %U http://conf.tac-atc.ca/english/resourcecentre/readingroom/conference/conf2009/pdf/Jiang.pdf