On a one way urban road, if lanes are not delineated by road markings, where is the driver of a passenger car required to drive?

Explanation
When driving on an urban road with at least two lanes for each direction, delineated by longitudinal road markings, the driver of the vehicle, regardless of its mass, can use the lane that is most convenient for their destination. In the case of a one-way urban road, as in this case, where in addition the lanes are not indicated by road markings, drivers must drive in the right lane but may occasionally use the other lanes when traffic circumstances require it.
Do you want to do the
official exams of the DGT?