> But there is nothing to support the claim that narrower lanes speed up traffic
My impression is that the opposite is actually true: narrower lanes tend to make drivers feel more nervous/wary, and they slow down as a result.
Lane-narrowing (and "perceptual" narrowing, adding features that make it seem narrower to drivers without actually changing the amount of space) seems to be a fairly common traffic-calming technique.
My impression is that the opposite is actually true: narrower lanes tend to make drivers feel more nervous/wary, and they slow down as a result.
Lane-narrowing (and "perceptual" narrowing, adding features that make it seem narrower to drivers without actually changing the amount of space) seems to be a fairly common traffic-calming technique.