The 91 Express Lanes (http://en.wikipedia.org/wiki/91_Express_Lanes) in Orange County are an interesting case - instead of charging a fixed toll to enter an area, there is a variable toll on a 10 mile stretch of freeway. There are 4 free lanes in each direction and 2 reversible toll lanes that go with the rush. Tolls vary from free (at night) to $10 on Friday afternoon.
One concern about these variable toll lanes is that they would only be used by the rich, but studies of license plates of drivers showed that every demographic used them about once a week, rather than every day or never. Pretty cool what happens when people have the option to pay more for better service.
The 91 Express Lanes (http://en.wikipedia.org/wiki/91_Express_Lanes) in Orange County are an interesting case - instead of charging a fixed toll to enter an area, there is a variable toll on a 10 mile stretch of freeway. There are 4 free lanes in each direction and 2 reversible toll lanes that go with the rush. Tolls vary from free (at night) to $10 on Friday afternoon.
One concern about these variable toll lanes is that they would only be used by the rich, but studies of license plates of drivers showed that every demographic used them about once a week, rather than every day or never. Pretty cool what happens when people have the option to pay more for better service.
http://en.wikipedia.org/wiki/Congestion_pricing