landmarks section
0   6   >streetlamp1<
1   -8   >billboard1<
2   5   >signal1<
3   5   >signal2<
4   -10   >telephone1<
5   10   >adsign1<
6   15   >station1<
7   -9.5   >station2<
8   4   >speed40a<
9   -4   >speed40b<
10   -4   >speed40c<
11   -4   >speed40d<
12   -4   >speed40e<
13   -4   >speed40f<
14   4   >speed60a<
15   4   >speed100a<
16   0   >subway1<
17   0   >subway2<
18   0   >subway3<
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