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Ring Roads

 

1. Effect of newly developed ring road in Tokyo

Congestion was mitigated after the opening of the Central Circular Route in Dec. 2007

 

2. Comparison of ring road development among countries

Completion rate of Tokyo’s ring roads is 48%. Ring roads in the main cities in other countries are well developed with multiple lanes.

City PlannedlengthLength in
service
Completion
rate
note
Tokyo525km251km48%as of Apr. 2012
Beijing433km433km100%Completed on Sep. 12, 2009
Seoul168km168km100%Completed on Dec. 28, 2007
Paris313km272km87%as of Jan. 2011
Washington D.C.103km103km100%Completed in 1998
London188km188km100%Completed in 1986
Berlin223km217km97%as of Jan. 2009
 
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