+----------+
| Weimar |
+----------+
^
|
|
+------+ +----------+ +-----------+
| Kiel | <-- | | --> | Frankfurt |
+------+ | Dachau | +-----------+
+------+ | | +-----------+
| Ulm | <-- | | --> | Berlin |
+------+ +----------+ +-----------+
|
|
v
+----------+
| Chemnitz |
+----------+