Same road, Same distance, different prices?
Yep... the idea is by putting tolls on only one direction, and making them twice as expensive. The average person will pay the same, as most people make round trips.
By doing this, you can take advantage of the geography to better control traffic (anyone that commutes in the area can stop laughing now). For example, all bridge / tunnel tolls in the area crossing the Hudson (Holland & Lincoln tunnels, George Washington & Tappan Zee bridges) are on the eastbound side. This keeps toll-related traffic from backing up into the city in the evening, thus reducing already extensive traffic problems in the city. In the morning, the tolls reduce the rate traffic spills into the city, again reducing the congestion in the city.
Of course all of this is theory, and probably worked when the system was initially set up, but ask anyone who commutes in now and you'll hear of hour-long backups in the morning on the approaches to the bridges / tunnels, and the same on the city streets leading to the tunnels in the evening. Unfortunately, the reality is tolls as a traffic management device don't work.
SkyTeam: The alliance for third rate airlines finally getting their act together!