People already driving generally aren't likely to change their destination, and all the traffic headed toward the dynamically priced toll road still needs to be diverted in a way that they will reach wherever they were going.
You aren't going to change congestion unless you fix the balance between throughput and volume. Dynamic pricing doesn't improve throughput, and it doesn't decrease volume- it just forces some of that volume onto less well equipped roads.
why wouldn't it decrease volume? presumably if it starts costing 100 bucks a day people would stop driving and take these hypothetical buses, no? of course as I mentioned I know this would never actually work for political reasons.
Because if it is dynamically priced, people won't know until they already need to go to their destination if the tollway will be affordable.
The volume on the tollway itself may decrease, but only because drivers suddenly need to take other roads that the tollway was designed to alleviate pressure from in the first place.
> People already driving generally aren't likely to change their destination
They are if you price it properly. If it costs $1000 to get on that road, a lot of people are going to find alternative means of transport, carpool, or forgo the trip entirely.
You aren't going to change congestion unless you fix the balance between throughput and volume. Dynamic pricing doesn't improve throughput, and it doesn't decrease volume- it just forces some of that volume onto less well equipped roads.