Road design, safety and Vision Zero

[danbrotherston]

I remember reading somewhere that these bricks across the road are used as an additional traffic calming measure in the Netherlands (they are noisy and cause a slight vibration...less than a speed bump but still something, and cheaper and quieter than doing the entire road in brick), but I cannot find the source. To me, it looks like a road repair patch. Does can anyone confirm or deny either theory with a source?