Unsupported browser

You are using an outdated browser. Please upgrade your browser to improve your experience.

Sign up for an Award

Participate with your entry in one of our professional or student awards.

Sign up for an award

Sign up for a Profile

Create your own profile and publish it in the iF WORLD DESIGN GUIDE.

Sign up for a profile

Learn more:


Present your project for free and win your share of EUR 50,000 in prize money.

Publish your project

Underground warning ballo / Underground warning ballon

Underground warning ballo

Some subway platforms have no security doors but only a yellow warning line, which has little warning influence. However, warning balloon will bring a feeling of movement when you wait and feel bored. The speeding train will produce suction, and it is very dangerous. Place warning balloon on the warning line, and it will be pulled to the train with suction. It gives a dynamic warning to make people away from danger area consciously.


Nanjing Univercity Of the Arts

Nanjing Univercity Of the Arts
Nanjing, China

Tao Geng,
Nanjing Univercity Of the Arts