Luge artificial ice tracks have specially designed and constructed banked curves plus walled-in straights. Most tracks are artificially refrigerated, but artificial ice tracks without artificial cooling also exist (for example, St. Moritz). Luge artificial track has been an Olympic discipline since 1964.
A list of all luge artificial ice tracks with or without artificial refrigeration can be found here.
Alpine luge is held on natural ice and snow tracks. These are adapted to existing mountain paths and roads. Artificially banked curves are not permitted. The tracks' surface must be horizontal. They are naturally iced, there is no artificial refrigeration.
A list of Alpine Luge tracks in our member countries can be found here.