ETS2 - Real Traffic Density (1.40.b)

Changelog v.1.40.b
-adaptation to ETS2 1.40 public update
-corrected one semaphore bug on large T crossroads
-harvester removed from open roads, will only circulate on country roads
-added a few rules to help Ai recover faster in case of accidents
-bdf trucks not allowed on country roads fixed

Authors: Cip