:D spotted this a year ago once on the road found it beck on the internet it seas (Jep it also counts for outher collors)
http://www.rijtempo.nl/images/belgie.jpg

Greets,

FairgangstaZ

what does it mean?

I thought the sign was international [&:] it means that the red car needs to stay behind the black car and cant go past it and the yellow sign seas that it counts for outher collors too :D

Greets,

FairgangstaZ

I never would've figured that one out.