Atlanta native; I haven't dug into the design of the study, but I am supremely skeptical of these results. There is a huge influx of new residents right now (and likely for the foreseeable future). That in concert with a renewed push for working from the office likely accounts for any increase in congestion seen any time recently. The city yearns for more public transport, but it is hard to imagine that 10% of all the insane traffic is directly related to a ban on this relatively new mode of transport.