What does "Mimo dopravní obsluhy" mean?

I was hoping someone from Chezh Republic could help me with this translation. What does "Mimo dopravní obsluhy" mean? There is a traffic sign over at my house in the Netherlands with the text on it and google translate doesn't help me much. Thanks a lot!

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Kiteman4 years ago
Google says; "Outside the transport operator"

Is there an image on the sign? Or what is nearby (rail crossing, unusual bridge etc)?
TigerNod (author)  Kiteman4 years ago
I have tried Google translate but I have no idea what to do with that describtion. There is no sign attached and to be frank I have no idea where we even got it from. Google Images shows it primareely being used with the no-entry sign.
Maybe it means "drivers, stay out?"
TigerNod (author)  Kiteman4 years ago
Possibly. If possible, I want to be certain though. There's got to be a Czech on this website right?
About 25,000 new hits per month, apparently...