Weird little piece of 'known' road in Strasbourg

[BHS]

I'm on a job going to Strasbourg, where this profile has not been before.

But looking at the map of Strasbourg there is a very small piece of 'known' road in the city.

[clauslr]

Telling a joke: This occurs when you Apparate to a spot and change your mind and Disapparate again.

This was a Harry Potter related joke that popped into my head.

[YarikRussia]

I'm on a job going to Strasbourg, where this profile has not been before.

But looking at the map of Strasbourg there is a very small piece of 'known' road in the city.

I do not understand the meaning of this report! What was wrong? Error petty, still then the whole town detour!

[n4gix]

Only places your truck has been should be "yellow" as that is how your completion of the map is determined.

Since it is impossible (without cheating!) for a part of the map to be "yellow" all alone like that, it is clearly a problem.