[AnthonyMouse]

Induced demand is a rubbish theory to begin with. The effect is explained by insufficient capacity suppressing natural demand, which returns when capacity is increased and thereby consumes some or all of the added capacity until you have enough capacity for the actual demand.

But it's especially rubbish when converting an existing lane, because the existing lane will have already allowed the demand to be high, e.g. people already built houses outside the range of mass transit and those residents are now locked in to using that road in cars, and you then remove the lane even though the demand is sticky.