Such a idea, worldwide use, should we call them “Kent”?
General, carriage_gap?

Looking further I found some websites.
The above concrete one, maxwidth to pass 2.25 m in the middle 18 cm.
afbeelding

They call it carterkiller, is that the same as “sump_buster” could we use that. Or a new tag without “Kent”

developer website
afbeelding
or
For now I have set:

barrier=sump_buster
horse=yes
carriage=yes

For me this is correct.

Maybe the wiki sump_buster, should mention this for carriage_gap.

carterkiller search:

This looks the same in working,
wiki image
Sporsluse

On website, although agricultural warning is mentioned as a example for carterkiller.

Newssite