I now have escape route signage with “out” or “exit”, do I now have to replace it with pictograms?

Unfortunately yes. To comply with the regulations of the Dutch government, you must replace the escape route signage with text by the pictograms. All this as described in the NEN 6088 standard or the NEN-EN 7010. Betalux ™ escape route signage more than meets this standard. Mixed use of exit / exit escape route signage and pictograms is also prohibited. The underlying reason of the government for the use of images (pictograms) is the language independent signaling in our multicultural society.