WordWeb Online

1. A type of rail car that has two levels of passenger accommodation, as opposed to one, increasing passenger capacity.
   "When double-deck carriages (bilevel cars) were introduced on North American railways (railroads) they identified a problem in that it would be physically difficult - if not impossible - for the conductor to verify, collect payment and sell tickets to such a large concentration of passengers in one car, especially in suburban passenger service, owing to the short distance between stops.";
   - bilevel car, bilevel railcar, bilevel rail car, double-deck railcar, double-deck rail car

Type of: bogie [Asia], car, railcar, railroad car [N. Amer], railway car [Brit, Cdn], railway carriage [Brit, Cdn]