Under what specific circumstance is a vehicle weighing up to 3,500 kg obliged to drive on the right-hand shoulder?

Question

DentroTest · Accepted Answer

According to General Traffic Regulations, automobiles with a Maximum Authorized Mass (MAM) not exceeding 3,500 kg must normally drive on the roadway. However, they are strictly required to use the right-hand shoulder (if passable and sufficient) when these conditions occur simultaneously: they are driving at an abnormally reduced speed due to an emergency AND they are seriously disrupting traffic flow. If they do not disturb traffic, they must drive on the roadway as close as possible to the right edge, even in an emergency. The other options are incorrect because driving slowly voluntarily is a traffic offense (obstruction), and dangerous goods have specific speed and signaling rules but do not default to using the shoulder.

Under what specific circumstance is a vehicle weighing up to 3,500 kg obliged to drive on the right-hand shoulder?

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