UK and Ireland does not use this kind of sign for pedestrian crossings, and should simply have been excluded. The triangular sign (and diamond sign for Ireland) is the one warning for an upcoming crossing. The rest of Europe also has such sign, but since the map isn't about the warning sign, therefore those should not be included. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.