Do you enjoy roller coasters? They actually kind of terrify me as I have a fear of heights.
be a complete circuit, as shuttle roller coasters demonstrate. Most roller coasters have multiple cars in which passengers sit and are restrained. Two or more cars hooked together are called a train. Some roller coasters, notably Wild Mouse roller coasters, run with single cars.
History.
History The Russian mountain and the Aerial Promenades.
The oldest roller coasters are believed to have originated from the so-called "Russian Mountains", specially constructed hills of ice located in the area that is now Saint Petersburg, Russia.
phobia, some cases have been treated successfully with a specialized therapy program. 
Contributing factors.
Contributing factors Acrophobia.
Most roller coasters combine substantial heights with seemingly insignificant support, as well as free-falls and the illusion of uncontrolled drops. Because acrophobia involves an extreme fear of heights and falling, these conditions could cause someone who is an acrophobic to have an extremely negative reaction to riding roller coasters.
Contributing factors Claustrophobia.
Claustrophobia involves two parts, fear of physical restraint and fear of suffocation. The safety harnesses