Not really. In US cities with good rapid transit lines, you still have plenty of congestion. If road capacity opens, there will be a transit rider who views t

Not really. In US cities with good rapid transit lines, you still have plenty of congestion. If road capacity opens, there will be a transit rider who views the drive time as acceptable and will just convert back to driving. Conversely, if you remove traffic capacity, some drivers will convert back to rapid transit or time shift their commute. Basically, road capacity is a free market and people are paying with their time, more than their money. For the people that absolutely must be somewhere at a specific time, they are forced to pay a higher cost in time to accomplish that. For others with more flexibility, they may not view the time cost as acceptable and will choose another option.