Sorry but my answer was not clear.

Quote Originally Posted by rondoan View Post
?? if the last option is activated and there are no * .fsp files in the content, then such "discoloration" may occur ??
Yes, as long as the Use Real Time Traffic option is enabled.

Quote Originally Posted by rondoan View Post
** Sections may also be drawn in red if [x] Show free traffic flow is activated
See the images below (scheme Frontzosd_skin_Day.zip and without .fsp file).

With Show Free Traffic Flow As Well off
Spoiler: image
[Only registered and activated users can see links. ]
With Show Free Traffic Flow As Well on
Spoiler: image
[Only registered and activated users can see links. ]
And now to complicate what the two lines next to the street mean.
With Show Free Traffic Flow As Well on or off
Spoiler: image
[Only registered and activated users can see links. ]