C'est bien indiqué pour la route en question : 

cycleway:right=opposite
highway=tertiary
lanes=1
lit=no
maxheight=2.5
maxspeed=50
maxweight=3.5
maxwidth=2
motor_vehicle=designated
motor_vehicle:conditional=no @ (Sa 14:00-24:00; Su 00:00-20:00; PH 08:00-20:00)
name=Route de Port
oneway=yes
ref=D 74
source=https://www.cadastre.gouv.fr;survey
surface=asphalt