Logo Design for Road Safety for Youths (ROSY)

Hey Guys. I created a logo design for Road Safety for Youths (ROSY).
Concept: When I start to think of road safety, 3 things come into my mind;
1. Traffic Lights
2. Zebra Crossing
3. Safety Signs

There, I chose No.3 and we can see geometric shapes like circles, rectangles, squares and triangles are used for making safety signboards.
In this logo, I created abstracts of letters 'R,O,S,Y' by taking the lower parts and using geometric shapes.

Colors: Traffic Lights colors
Much appreciate if I receive constructive critiques for this logo design. Cheers!