Motorcycles With Passengers
Like all other expressways in Japan, two-wheeled motorcycles with passengers were banned for many years. Even though a legal amendment on 1 April 2005 generally allows a person aged at least 20 with a motorcycle driver license for at least 3 years to carry a passenger on a two-wheel motorcycle on an expressway, some segments of the Shuto still prohibit passengers. These segments include the important C1 route and adjoining central Tokyo routes. With the opening of the Yamate Tunnel Ohashi junction in 2010, motorcycles with passengers are finally able to pass through the Shuto Expressway from the Tomei to other expressways using the C2 route, although this can be a much longer drive in some cases. See this map for details.
Read more about this topic: Shuto Expressway