text: IN SOURCE TWO PARIS BANS DRIVING DUE TO SMOG BY ROBERT DUFFER. IN PASSAGE 14 IT SAID THAT "CONGESTION IS DOWN 60 PERCENT IN THE CAPITOL OF FRANCE, AFTER FIVE DAYS OF INTENSIFYING SMOG. THE SMOG RIVALED BEIJING, CHINA, WHICH IS KNOWN AS ONE OF THE MOST POLLUTED CITIES IN THE WORLD." DRIVING CAUSES THE BUILD UP OF POLUTION WHICH CAN BE DANGEROUS.