"Sea side lane repair. Circulation in both directions on the remaining lane regulated by traffic light."

In that case the road is still accessible to traffic both directions, just with delays. Most data consumers expect highway=construction to mean it's undergoing construction and has not yet opened and therefore there is no access, so I wouldn't use the tag in this case, it will break a lot of maps and routers. I realise we don't tag for the rendered, but I think there has to be a better way to mark it as undergoing repairs but still open than just highway=construction.