A traffic information providing device according to an embodiment includes: a communication unit that receives driving information from a plurality of vehicles; and a controller that detects vehicles having danger of a collision at an intersection area from the plurality of vehicles on the basis of the received driving information, creates traffic information for the detected vehicles having danger of a collision to avoid a collision of the vehicles having danger of a collision, and controls the communication unit to transmit the created traffic information to the vehicles having danger of a collision before entering the intersection area.