
Welcome to Tokyo's Narita International Airport, where rubber running tracks snake across the floors, guiding passengers from entrance to airplane, and back again.

It's the creation of Tokyo-based creative lab PARTY, who designed the earth- and blue-colored tracks for the new low cost terminal, which opened on 8 April.

Tokyo is set to host the 2020 Olympic Games but the track's designers say that travelers' health was not their main concern...

The terminal was constructed on a budget of only half of the usual amount, say PARTY, with the customary moving walkways and illuminated signs cast aside in favor of unusual alternatives.

"This airport pursues complete low-cost. However, we started thinking about, on top of the usual low-cost, the new types of exciting low-cost architecture we could make," says Wataru Tanaka of architects Nikken Sekkei who took charge of the terminal's construction.

Central to the project is avoiding the disorientation common to large terminal buildings: giving travelers an easy-to-follow marking to follow to their destination, while maintaining a sense of holidaytime fun.

The designers worked with minimalist homeware brand Muji -- these sofas are a modified take on Muji's "footed mattress" -- to follow a concept they called "necessity minimum design."

"To us, what low-cost architecture has been lacking is the sense of excitement in the space," says Takao Goto of Nikken Sekkei.

The two colors denote travelers direction of movement: blue for departures, earth-color for arrivals "The blue running tracks express the color of the sky, and the uplifting feeling of traveling somewhere far away," says PARTY's Naoki Ito.

"The earth-colored running tracks express the sense of relief when people finally land in Japan after a long journey. The idea is to use these two colors as user-friendly signs to guide people."

Across the terminal, which exclusively serves budget carriers, low-cost features can be found where expensive ones are expected. Here, wire mesh replaces glass.

The running track reduces the need for costly electric signage, and where signs are required, simple static signs are used.

The open food court employs low-cost natural wood Muji furniture, but creates a modern, domestic feel in the heart of an airport departure lounge.

"Considering the characteristics of LCC (Life-cycle cost), how travelers are here around the clock, We created sofa's for people to relax and even lie down for a rest," says Muji's Naoko Yano