text: The first advantage was less smog. In Paris there was typically more smog than other European capitals. On mondays people were ordered to leave their cars at home or get fined a 22 euro fine ($31). It says in source 2 "Congestion was down 60 percent in the capital, after five days of intensifying smog." That quote right there shows that with people using their cars less there wouldnt be as much traffic as there was in the past and it has lessened the polution that was in the air. It says "Exceptions were made for plug-in cars,hybrids,and cars carrying three or more passengers", This was probably more enviormental friendly because those cars dont really use diesel fuel as apposed to the regular cars. As a result of all of that the smog cleared enough monday for the ruling french party to rescind the ban for tuesday.