text: " by Robert Duffer, on monday motorist with even numbered license plates were told to leave their cars at home or suffer a 22 euro fine which turns out to be $31 U.S. Dollars. And then the same thing would happen to those whose license plates ended in an odd number the following day. This had to have cut pollution a huge amount. If you think about how many people are living in Paris, and you think about them all staying off the road due to a ban then you may be able to understand the amount of pollution that wasn't produced during this ban. Now Paris, did this for the advantage purpose of reducing the amount of pollution they had in their air and by not adding more to it. It couldn't have a negative impact they were doing something good for the enviornment even if it didn't really help that much. Out of the whole city of Paris about "4,000 drivers were fined," and "27 people had their cars impounded for their reaction to the fine" (Duffer 12). Another advantage that Paris had due to them banning car usage was that "Congestion was down 60 percent" (Duffer 14). The ruling French lifted the ban when the smog cleared up enough.