Dave Brook forwarded this interesting piece from the San Fancisco Chronicle on merging tolls with bus rapid transit. While the idea is up for consideration in the Bay Area, it apparently is going to be tried in Houston.
The basic idea is to put toll lanes alongside regular lanes, and control usage of the toll lanes, reserving capacity for buses.
The question that occurs to me is what happens if the toll lanes congest? The Houston project says it will adjust pricing to prevent this. That makes me wonder if we could explore the idea of dynamically priced toll lanes? Traffic cameras would figure out the level of usage and prices at the toll both would dynamically go up the closer to the congestion point the usage got.