The most significant part of the SCS Software 1.40 Update was the complete revamp of the lighting system.
: The game now uses physical light units, making sunlight and artificial lights react naturally with truck paint and chrome. AMERICAN TRUCK PACK FOR ETS2 1.40
: For those using an "American Truck Pack" mod, 1.40 was a critical turning point. Because of the new lighting, older modded trucks often appeared "blown out" or too dark until their materials were updated to support the new system. Map Reworks: Germany and France The most significant part of the SCS Software 1
: Large portions of the German road network were completely rebuilt with modern assets and realistic junctions. AMERICAN TRUCK PACK FOR ETS2 1.40