Translations:Instrukcja SWDR4/29/en

From TTSK

The speed limit section allows you to define the speed limits that exist on the scenery. Due to a possibility of limits occuring when driving in only one direction, you must first specify the direction in which the limit occurs. It is assumed that for double - track routes, driving always takes place on the right - hand track, and for single - track routes, the limit can be entered in both directions.