With the addition of BMX as an Olympic discipline at the 2008 Beijing games, the UCI Management Committee decided on Friday that the men's kilo and women's 500m time trial would be removed from the Olympic program in order to maintain 18 medal disciplines.
http://www.usacycling.org/news/user/story.php?id=1724
http://www.usacycling.org/news/user/story.php?id=1724
