According to https://wiki.openstreetmap.org/wiki/Key:bollard, a rising bollard is one which **automatically** rises and controlled by a timer or other mechanism. That is not what this is. Likewise it is not a removable bollard -- it is pushed into the ground rather than taken away. 

The one here looks to be similar to https://www.cmpionline.com/major-advantages-of-retractable-bollards which is described by manufacturers as a *retractable* bollard.

https://taginfo.openstreetmap.org/tags/bollard=retractable#overview confirms that others have mapped these bollards as retractable.

