References on highway links

I have seen on a link connecting two highways a reference of the form “15;126” to signify highway 15 linking to 126. Is this standard practice?

Well, there is a kind of definition about in the OSM wiki, but I am not sure whether this fits in your spotted situation.

Maybe a better way to define the destination of a link way can be ?

Thanks, that was very helpful. It definitely shows that the ref tag is being incorrectly used. Combining what you provided with the information at: and

made it all clear for me. It looks like the ref should be removed and an exit_to tag should be used instead.