Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Bundesautobahn 1:

"

At Wuppertal-Ronsdorf the directional carriageway of the A 1 was divided in the course of the six-lane extension in Blombachtal for about one kilometer. This is in Germany only on the A2 at Bad Oeynhausen, on two sections of the A7 between Hamburg and Hanover, the Albaufstieg on the A8 and the A9 in the Altmühltal and Hienberg the case.