Plastic road stud is installed in the middle of the road marking or the middle of the double yellow line, it reminds the driver to drive in the lane through its retro-reflection performance.

Aluminum road stud is installed in the middle of the road marking or the middle of the double yellow line, it reminds the driver to drive in the lane through its retro-reflection performance.

Solar road stud absorbs sunlight at daytime and release light power at night.