Same as Fig. 2, but only the peculiar motion vectors of the high peculiar motion sources are shown (cyan). The black and gray dashed lines represent the position and width of the Scutum spiral arm as described in Sato et al. (2014). The dotted blue, dot-dashed brown, and dashed magenta lines show the locations of the bars of Bissantz & Gerhard (2002), Wegg et al. (2015), and López-Corredoira et al. (2007), respectively. A minor axis of 1.2 kpc is assumed for all three bar structures.