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"OO" is a bicycle pedal for the safety of bike riders at night. The pedal has 3 lines of LEDs on its underside to simulate the horizontal movement of a glowing light. When the rider pushes on the pedal, the spine of the crank arm around the chain wheel creates two thin ellipses on both sides of the bike, and since the pedal is going up and down, the ellipses make the horizontal line of lights move vertically. These two ellipses are big enough to attract the attention of drivers from a great distance so that they will be aware of riders and decrease their speed.
Amirkabir University Of Technology