You are driving on the motorway in a motor vehicle with a gross vehicle weight rating in excess of 7.5 t. The heavy snowfall has reduced visibility to less than 50 m. What must you do?

In German traffic rules, when driving a heavy vehicle over 7.5 tons on the motorway under severe visibility conditions—specifically when visibility is reduced to less than 50 meters due to heavy snowfall—you must follow special regulations for safety.

Firstly, you are not allowed to use the extreme left-hand lane because this lane is usually reserved for faster traffic, and your restricted visibility combined with a heavy vehicle can pose a higher risk of accident. Secondly, your speed must be limited to a maximum of 50 km/h. This speed limit helps ensure you have enough time to react to sudden obstacles or changes in traffic conditions during low visibility.

The third option, leaving the motorway at the next exit, is not mandatory under these conditions. However, you must adjust your lane use and speed as described to maintain safety.

Understanding these rules helps ensure traffic flow and safety during hazardous weather conditions on motorways, especially for heavy vehicles.