a Data from WHO, 2009a, except for economies People's Republic of China, Hong Kong, China and Chinese Taipei. Data for the Republic of the Philippines and Viet Nam taken from WHO2009b
b Data from WHO, 2009b
c Data from WHO, 2009c
d Data from WHO, 2009d
e WHO 2009e
f Best practice report, Nearly every 2 persons owns a motorcycle approx popn
g FHWA 2008
h NHTSA 2009: National Occupant Protection Use Survey in 2008 — use of DOT compliant helmets
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Percentage of motorcycles against GDP (click to view full-size image). Source data: WHO reports.
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