If you check these maps...
then you have to understand that any team or group of teams coming into the area to make based on DIY shop available substances rucksack bombs of 40kg explosive weight to attack already traffic jam impacted Autobahn crossings and river barriers with placeing about 20 bombs in a few days will put down that nation and out of business for a very very long time.
If you blow up the 5 barriers of the Ruhr the Rhine will flood and most of Germanies steel industry is out of business especially during a heavy rain season.
There are 5 main Autobahn crossings diagonaly stretching through the Rhur Areas traffic jam center that would devide the area into two if blown up.
A9 and A7 are the two most important connections North to South and placing the remaining 10 onto their main crossings everyone had to use the German train service.
They kill each other on the platforms after a week....
