Professor Azuma Taguchi of Tokyo's Chuo University used a mathematical model to predict the flow of passengers on a hypothetical day during the Summer Olympics.
Tokyo's Olympic organisers have faced criticism over a series of embarrassing public relations blunders since beating Madrid and Istanbul for the right to host the 2020 Games.
IOC coordination commission chairman John Coates paid tribute to a "very, very successful" Games in South Korea as he started two days of meetings with Tokyo 2020 officials.
Tokyo is stepping up preparations for the next event on the Olympic calendar, with busy building sites dotted around the Japanese capital.
Graz in Austria, Calgary in Canada, a joint bid from Milan, Turin and Cortina d'Ampezzo in Italy, Sapporo, Japan, Stockholm, Sweden, Sion in Switzerland, and Erzurum, Turkey, have put their names forward.
The mascot, which has yet to be named, was selected by elementary school kids across the country from a shortlist of three competitors instantly recognisable as "made in Japan"
Jeglic is a forward who plays his club hockey in the Kontinental Hockey League for Russian side Neftekhimik Nizhnekamsk
Alexander Krushelnitsky, who won bronze in the mixed doubles curling with his wife Anastasia Bryzgalova, was the subject of a new procedure at the CAS anti-doping division
Their latest defeat was 2-0 to Switzerland, but the scoreline would have been much worse were it not for Shin
11 months ago Mark McMorris was fighting for his life after breaking 17 bones and suffering a collapsed lung and ruptured spleen in a snowboarding accident
While the official opening ceremony is on Friday, an 18-day Olympic sports programme began when South Korea's Jang Hye-Ji slid the first stone down the curling ice
British newspapers said they had been passed a database showing that more than 50 cross-country skiers returned abnormal readings between 2001 and 2010
Samsung Electronics has donated 4,000 "Olympic edition" handsets of its flagship Galaxy Note 8 device to be distributed among athletes and IOC officials free of charge
The 229 young women were among a 280-member delegation who crossed the Demilitarized Zone that divides the two Koreas at the Dorasan border post north of Seoul
Pound's comments were tough enough to prompt a suggestion that he be silenced, a request which in turn triggered a furious response from the Canadian