The sign "Vehicles with a permissible total weight over 3.5 tons indicating left" is a traffic regulation sign in Germany that indicates specific restrictions or directions for heavy vehicles. This sign typically means that vehicles that weigh over 3.5 tons are required to turn left at the upcoming intersection or point.

In practical terms, this means that if you are driving a vehicle that exceeds this weight limit, you must comply with the sign's instruction to ensure safe navigation through the area. These regulations are in place to manage traffic flow, minimize congestion, and enhance safety for all road users, particularly in areas where heavier vehicles may pose a risk if they attempt to turn or maneuver without clear guidance.

If you have further questions about this sign or related traffic rules, feel free to ask!