https://www.openstreetmap.org/way/373585082 : C3 with exception for : Bus , Taxi and bicycle. I have see that in another similar case we add access=no with exception but should probably here add a sidewalk in order to not brake pedestrian routing (not welcome on secondary) 

https://www.mapillary.com/app/?pKey=1275568996737697

https://www.openstreetmap.org/way/417322356 is indicated oneway but when comming from Paul-Henri Spaak to Rue Bara there is also a C3 with exception https://www.mapillary.com/app/?pKey=362394269247757 (will recheck later today if still in application but i think yes).

And From Rue Bara to Spaak there is no restriction so the oneway is wrong : https://www.mapillary.com/app/?pKey=1123586778894983