I think there is more here than meets the eye. The modern suburban arterial often has light cycles measured in a few minutes, which adds up if you're hitting a

I think there is more here than meets the eye. The modern suburban arterial often has light cycles measured in a few minutes, which adds up if you're hitting a bunch of them. Dedicated bike infrastructure, even at high volumes, does not require coming to a full stop, so while the top speed might be lower, the average is more competitive than it appears. And grade separating a bike lane is a lot easier than a whole suburban road.