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

Yiyuan Liu / WHEEL&BIKE

Yiyuan Liu
Yiyuan Liu

More children (3-8 years old) like to ride bike (with training wheel) for fun in the community for fun. Because of the bad control to the bike, sometimes they can't control their direction,which can cause crash. The D-wheel can help another people who ride bike or e-bike know, which direction the children will ride. So that the crash can be avoied.


Tongji university

Tongji university
Shanghai, China

Yiyuan Liu,
Tongji university

Yunpeng Li,
Tongji university

Yimu Yang,
Tongji university

Yizhou Gao,
Tongji university