a few nits:
- L
eidschendam.
- Zuidplas municipality established in 2010.
- Bodegraven-Reeuwijk municipality established in 2011.
- Utrechtse Heuvelrug is an area and not a place AFAIK.
- Flevoland is still submerged so most of the part between Naarden and Dronten is not there.
- Dronten does not exist yet.
- Noordoostpolder is the name of area that was reclaimed. It won't be a municipality until 1962.
- Historically the A7 was rijksweg 43 at this point. Needs to stay that way for its nickname later, the 'rijksdodenweg 43'.
(I would probably best translate that to national deathway 43)
- A13 already is partially around between Nootdorp and Overschie (since the 1930s) so it would be an extension and not new.
- The Delft-Overschie part has no separated lanes for both directions of travel. It would be part of the construction plans to make it a proper highway section.
- The existing section is 2x2. in 1950, the decision was made to change it to 2x3. That is also something that you could make part of the construction plans at this point. Historically it was the first 2x3 highway in the Netherlands.
... okay so it is a bit more than a few.