What country has the most Bollards?

There is no official data or ranking to definitively state which country has the most bollards, but Germany is often cited as having a very high density of bollards due to its strict regulations, with one source mentioning a bollard on average every 50 meters.

The German state with the most traffic bollards, based on the number of categories in a public image repository, is North Rhine-Westphalia. It has at least four categories for "Traffic bollards in North Rhine-Westphalia", with many other states only having one or two.