To be fair there is a massive difference between separated bike lanes, which do achieve this, and just a painted line on the ground so the government could say they put a bike line in. Significant amounts in a lot of places are the latter.
> Bike lanes reduce congestion.
Wrong. The INCREASE congestion. Even new fast transit lines increase congestion in the vast majority of cases.
Surprised?
They increase congestion of bikes but decrease congestion of cars ;-)