Against access to the property via the private road (green arrows), one may be less able to do anything; only a lawyer can probably answer that. But that an additional access via one's own property must be allowed, I do not see, since there is access to the property via the private road. And that the WBG must be granted the possibility to additionally use a private property as access, I hardly believe, as the planning can be adjusted accordingly. Here, I would consider the possibility of suing because it means a significant restriction for one's own property. The question is anyway whether a gate is put up at the border to the private road, so that people do not constantly park on one's own yard because there are too few parking spaces.