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