The single-level Viewliners are a marked departure from even recent passenger train design. Their most noticeable features are the double row of windows and increased overall height. The dimensions (the cars are 85 feet long, over 13 feet high, and 10 1/2 feet wide) were calculated to provide maximum interior space while allowing the cars to clear the low, narrow tunnels in the East. The heating and the air conditioning systems fit in the drawers under the car and slide out for easy maintenance.

Viewliner sleeping cars have 12 compartments, two deluxe bedrooms and one handicapped-accessible deluxe bedroom. The two adjoining bedrooms can be opened to form a bedroom suit for four. Each double-occupancy compartment has a sink with hot and cold water, toilet and ice-water faucet, as well as an upper and lower berth.