If it isn't a problem there, why should it be a problem here with giving similar priority?
Zebras crossing the carriageway, not at a junction, need some sort of advance warning of their presence. In the UK the Belishas are the recognised (currently required) warning. What do other countries do?
The DfT response to Chris Boardman's suggestion was slightly amusing.
DfT wrote:... any potential regulation change would need to be based on robust research and supported by off-road trials.
Should be quite easy - put a zebra without Belishas in a field, get people to walk across it & observe if any (non-existent) cars fail to stop!