Use the ImproveOSM plugin in JOSM to identify and fix missing one way roads.
In many cases (but not all) the probe data and correctly identify missing one way tags on roads. In many cases these are bits of ways in the middle of larger roads that have been missed by mistake.
Load the ImproveOSM plugin in JOSM
Inspect the area around the missing one way
Look at nearby roads to see if there is a pattern.
Check the paint markings on the road
Check the direction of the cars if you can see them clearly
If you're not sure, leave it. Put in a map note for someone on the ground to check.
Use the ImproveOSM plugin in JOSM to identify and fix missing one way roads.
In many cases (but not all) the probe data and correctly identify missing one way tags on roads. In many cases these are bits of ways in the middle of larger roads that have been missed by mistake.
Load the ImproveOSM plugin in JOSM
Inspect the area around the missing one way
Look at nearby roads to see if there is a pattern.
Check the paint markings on the road
Check the direction of the cars if you can see them clearly
If you're not sure, leave it. Put in a map note for someone on the ground to check.