Slow traffic is created non-linearly, i.e. if a road has a capacity of 100, it will be totally fine 0-90, but traffic will rise sharply after that point. If you

Slow traffic is created non-linearly, i.e. if a road has a capacity of 100, it will be totally fine 0-90, but traffic will rise sharply after that point. If you could reduce the amount of cars by 10%, you could massively reduce the traffic that everyone is experiencing. So in that example, 90% of commuters will still be driving and paying tolls, but with far less traffic, and the other 10% may be on public transit/bike/walk/wfh and also experiencing far less traffic.