The focus of this article is on the development of vehicular communications (V2X) devices. An overview of V2X application scenarios will be presented along with the two wireless access technologies that could be used to perform V2X communications. With the help of the brief V2X introduction, we will establish an understanding that wireless access for V2X communications controlled by the cellular network (also known as cellular V2X, or C-V2X) could complement other wireless access candidates in unlicensed and dedicated frequency spectrum ranges.