Originally Posted by
RChung
Here's a photo of a typical one-way street in Paris. Note the bike markings and arrow. (This isn't my street, it's my father-in-law's street, but our street is also one-way, and also allows "contre-sens" flow.
One way Parisian street, with bike markings indicating permissible "contre-sens" flow.
So effectively that is one-way road for cars, but two-way for bikes. The bikes flowing against the traffic are on the right like they would be on a two-way road. Bikes flowing with the traffic would also be on the right.