text: In Paris, there was a day of near-record pollution. They decided to enforce a law banning certain cars on certain days to try and help clear the air. On Modays, people with even-numbered licence plates had to leave there cars at home or pay a fine of 22-euro or $31. About 4,000 people were fined that day. The congestion was down 60% in paris as well, and the smo cleared up enough monday for the French to decide on the banning of odd-numbered plates on Tuesday also.