Test Networks from "Measuring the Structure of Road Networks"

Fig. 5 displays four base networks , 15 x 15 90° network (A0), 15 x 15 45° network (B0), and 15 x 15 30° network (C0), and 4 x 4 complete network (D0), as well as 12 network structures derived from them (three for each). As can be seen, links have been specified as five different hierarchies [1-5]. The boldness and grayness of a link indicates its hierarchy level and a bolder and darker link represents a road of a higher hierarchy. This study examines these 16 networks with proposed structural measures. (p 348 of Xie and Levinson (2007) Measuring the Structure of Road Networks)