Traffic penalty?

[Morgan]

In the Game Options screen, the mouse-over text for Traffic Penalty says,

If active, then moving too many units in a given region within the same turn will provoke a traffic slowdown. The penalty can be set to low, medium or high depending of the cursor position.

The slider has five positions. I assume that the leftmost position is "none," but what are the other four? And how much is the slowdown?

[Taillebois]

For the time being given the newness of the game and its small team I would suggest following the manual page 13:

"We believe the best historical feel is achieved by using the default settings."