As of 2012, there are nine remaining side friction roller coasters. Seven are in Europe, one is in Australia, and one is in North America.
The oldest example, and the oldest operating roller coaster, is Leap The Dips at Lakemont Park in Pennsylvania. Another is Rutschebanen at Tivoli Gardens in Denmark. (Pictures of Rutschebanen will be added in the next few months!)
©2012 Joel A. Rogers.