There are three circumstances in transportation circles when the words congestion and pricing find themselves in close proximity.
The first in in regard to congestion pricing, this being the process by which drivers are either 1) charged a toll either at certain hours of the day in certain parts of the city or 2) charged a dynamically higher (or lower) price depending on actual conditions on the roadway. In both cases the thinking is that the value of a stretch of road is not a fixed amount but changes with the circumstance. Congestion pricing has been used to good effect in certain cities overseas, and is now making (slow) inroads into various of our own cities. READ ARTICLE