Something does not feel right...

Driving in Finland - on the left side or the motorway... No on-coming traffic (thank God!)...

To be honest, some signs were clearly not in place. The traffic coming from North was guided to the left side... But it was never mentioned that there is no on-coming traffic at all. We just found it out (well, apparently did not meet any cars coming from the other direction...) at the end of this over 10k section... The road was closed totally for Northbound traffic due to road work. Still, one could feel a bit more comfortable if knowing it already when entering the wrong side of the motorway!