A "Classic Dark Ride" is a 20th century technology of a little car, carrying between 2 and 6 people, going along an electrified busbar track in a dark room past simple flats and darkened scenes, often illuminated by blacklight.
That compares to the bigger
rides in the dark, like
Pirates of the Caribbean or
Haunted Mansion or
Indiana Jones Adventure, not to mention rides at big corporate pavilions at World's Fairs like the
General Motors Futurama or
Ford's Magic Skyway. Those took the classic dark ride concept and expanded wildly it into something else entirely. Like comparing a 1930's small corner grocery store to a 1990's Big Box store in the suburbs.
But in the discussion of Disney theme parks, a classic dark ride is Alice In Wonderland or Mr. Toad's Wild Ride or Monsters's Inc. or Pinocchio's Daring Journey or Snow White's Scary Adventures. Or, if you are WDW, it's only Peter Pan and Pooh.