Hanoi, Aug. 26 -- A preliminary review of the grand ceremony and parade celebrating the 80th anniversary of the August Revolution and National Day (September 2) is set to take place in the capital city on August 27. To ensure safety and prevent congestion, the Hanoi Police Department has announced plans for traffic diversions. From 12:00 on August 27 until 02:00 on August 28, all vehicles, except those with official badges and serving the celebration, will be strictly prohibited on many major streets, including Hoang Hoa Tham, Thuy Khue (from Hung Vuong to Van Cao), Mai Xuan Thuong, Quan Thanh, Phan Dinh Phung, Hung Vuong, Hoang Van Thu, Doc Lap, Chua Mot Cot, Bac Son, Ton That Dam, Nguyen Canh Chan, Hoang Dieu, Cua Bac, Yen Phu, Thanh Ni...