Are there also junction pieces without pre-determined breaking points?

Yes. In this case, however, there is greater damage and destruction in the event of an impact, and damage costs are higher. But there is sometimes good reason to use a junction piece without pre-determined breaking point. One example of this would be to protect pedestrians in narrow spaces or on narrow pavements, in front of display windows, jeweller’s shops etc.
Important advantage: Unlike permanently concrete-cast bollards, bollards featuring junction pieces without pre-determined breaking point can be removed at any time.