if the congestion goes down then the traffic has gone down and thus,less money from the tolls...
Seattle has this 405 deal going where there are 1-2 lanes that you must pay for but you get to go fast, fast fast....meanwhile, those who can't afford the many bucks per day to get to and fro work, just struggle along on congested roads....
its always about more money and less about congestion,traffic safety, air pollution, or last of all, citizen convenience.
Didn't this kind of thing used to be called bribery?
If the Mafia does it it's called EXTORTION; so...