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. 2009 Jul 28;9(8):5968–5988. doi: 10.3390/s90805968

Figure 1.

Figure 1.

(a) System Description. The direction of a vehicle is from the bottom to the top (yellow arrows). Only one direction is shown in the figure. (b) System Description with network connection. The direction of a vehicle is from the right to the left (yellow arrow). Only one direction is shown in the figure.