LED Traffic accident risk detection notification system using radar and LED
Pedestrian guidance system and method for the visually impaired on diagonal crosswalk
SUBWAY VOICE GUIDANCE SYSTEM FOR THE VISUALLY IMPAIRED
Black ice accident prevention system using reversible discoloration paint
Pedestrian guidance system and method for the visually impaired on diagonal crosswalk
TRAFFIC ACCIDENT ANALYSIS SYSTEM USING ERROR MONITORING
Road black ice warning sign displayed on the road surface