1 1-cell type traffic light device using multi-color LED
2 LED Street lamp having secondary traffic accident prevention system
2 LED Street lamp having secondary traffic accident prevention system
2 METHOD FOR SECONDARY ACCIDENT PREVENTION BASED ON MAGNETIC INDUCTION PRINCIPLE GUARD RAIL
2 Sign system responsive distance and speed detecting for preventing second traffic accident
2 Warning System for Preventing Secondary Collision on Expressway
2 Warning System for Preventing Secondary Collision on Expressway
2 Warning System for Preventing Secondary Collision on Expressway
2 Warning System for Preventing Secondary Collision on Expressway
3 3-way camera apparatus for parking control with parking space displaying function
3 4 INTEGRATED DIAGONAL CROSSWALK FOR THREE-WAY AND FOUR-WAY CROSSROAD