When Adding Bike Lanes Actually Reduces Traffic Delays

A big reason for opposition to bike lanes is that, according to the rules of traffic engineering, they lead to car congestion. The metric determining this outcome (known as “level of service”) is quite complicated, but its underlying logic is simple: less road space for automobiles means more delay at intersections. Progressive cities have pushed back against this conventional belief—California, in particular, has led the charge against level of service—but it remains an obstacle to bike lanes (and multi-modal streets more broadly) across the country. But the general wisdom doesn’t tell the whole story here. ….[READ]