It is good this use of large heavy concrete blocks that lock together. They are a good deterrent and are effective to a large degree. But as tested by Berlin experts in the configeration as demonstrated, do have considerable limitations.
For one, there is the understanding of physics in the understanding of kenetic energy in the physical moving body. This energy to be defeated, must be absorbed or deflected in a manner to render harmless.
If the design is to provide with a solid barrier, then best to link the individual concrete blocks with cast in heavy chains. In this manner, in the stead of one, two or more blocks standing alone to absorb the given impact, all of the blocks as chain linked will act together. In this manner, not only will the chained blocks give cause for solid resistance, but through sliding action of the blocks being pulled aside, will create through generated friction between the sliding blocks and the bottom surface thusly using the action of surface coefficient of friction.
In the case of a protected entrance that must be accessible for both passenger vehicles as well as delivery vehicles both of the semi variety and delivery van. The design must be flexible, but yet strong and easily managed. It is in this application that the barrier be designed to both provide a manner of deflecting built up kinetic energy and absorbing the effects of a moving body in motion. This usually is in the configuration of a lined zig zag path the forces the moving body in to using up built up kinetic energy by tyre scrub in negotiating through the zig zag forced path. Once slowed, the vehicle then may be stopped by a physical movable obstruction.
Although there is a wide variety of fixes as much as the human mind will conceive, the opposite human mind will defeat.
If the target vehicle is loaded with enough explosives, then the vehicle be not to be close but near enough to then upon detonation, create enough lateral and direct damage to satisfy the design of the action.