Authorities in Rome have banned trucks from entering the center of the capital for the festive season after the attacks in Berlin and Nice. Trucks and other large vehicles will be barred from the designated zone during the weekend of December 24, 25, 26, then December 31 and January 1 and 6, local media said. Only vehicles weighing less than 3.5 tons and carrying emergency medical supplies, newspapers and post will be allowed. The announcement comes as Italy steps-up its security in several major cities, including Milan and the Vatican, where extra police and roadblocks have been deployed on the streets.