I would start with the review:
TUR AvcHarBag:
OSM shows exit numbers. They are not signed though, but it's maybe better to name the junctions with the number? Alternatively, the main junctions have also a name (Kavşağı in Turkey), like Haramidere Kavşağı, Esenyurt Kavşağı, Bahçeşehir Esenyurt Kavşağı). Can also remain like it is though. The remark is valid for most of the other routes too.
TUR BuyBayBag:
I don't really see the point of it, as it is concurrent with the D100.
TUR BuyYolu:
DinSok is a little off.
TUR CimBag
fine
TUR GorBagYolu
fine
TUR HabHasBag
it seems that it is signed as O-7. The name is also the same (Kuzey Marmara Otoyolu). Maybe we should integrate it in the motorway system as a variant of the O-7?
TUR HasOkmBag
fine