The ninth Thursday of restricted traffic in Rome is on 10 March. Vehicles with licence plates ending with an even number will not be allowed to circulate in the "fascia verde" - the green zone - between the 09.00 -12.00 and 15.00 - 19.00. All vehicles that run on methane, GPL, electricity and the most-recent models, classified as Euro 4, are allowed to circulate freely.

For details of the green zone see page 114 of the 2004 edition of "Tutto Citt", the city guide and map that comes with the telephone directories.