Driving priority with a side road of different type surface

So I was driving on this road in the Netherlands, and come to this situation.

As you can see from the picture, imagine you're driving on a vertical road, and the other car is coming from the right, which is a smaller road (only a single lane road). I assume the car from the right has the priority, because it's coming from the right, correct?

The reason it is confusing for me is because the road surface is different color and different type (asphalt vs. tiles and black vs red), so I get the impression that the straight road is the main one.

Additionally, I did some googling and it seems like at the T intersection, the drive coming perpendicular from the side must yield. But I am not sure if this is considered a T intersection.

Is it correct that I have to give a way for cars coming from the right?

Note1: On the right you can actually see two roads, it's because it's a short U shaped road towards parking, so you enter on the right and exit on the left.

Note2: That red triangle sign says "verkeer van rechts" which warns of "traffic from the right". However, it does not define priority, it's simply a warning sign.