Method for v2x transmission resource selection performed by means of terminal in wireless communication system and terminal using same

The present invention provides a method for a vehicle-to-X (V2X) operation performed by means of a V2X terminal in a wireless communication system, the method characterized by: determining whether or not another communication is being performed on V2X resources on which V2X communication is being performed; and performing the V2X communication on the basis of the determination, wherein a terminal drops the transmission for the V2X communication during the determining of whether or not another communication is being performed on the V2X resources on which the V2X communication is being performed.