On the occasion of the 'Ceremony of Presentation of Credentials' as part of the 'Reception of Foreign Diplomats,' which is counted among the state affairs, a newly-appointed ambassador is offered the service of a horse-drawn carriage for transportation.
天皇の国事行為の「外国の外交官の接受」の一環である「信任状奉呈式」に際しては、皇室の馬車での送迎を認めている。