Bhutan
total: 8,050 km
paved: 4,991 km
unpaved: 3,059 km (2003)
Bolivia
total: 62,479 km
paved: 3,749 km
unpaved: 58,730 km (2004)
Bosnia and Herzegovina
total: 21,846 km
paved: 11,425 km (4,714 km of interurban roads)
unpaved: 10,421 km (2006)
Botswana
total: 25,798 km
paved: 8,410 km
unpaved: 17,388 km (2005)
Brazil
total: 1,751,868 km
paved: 96,353 km
unpaved: 1,655,515 km (2004)
British Indian Ocean Territory
note: short section of paved road
between port and airfield on Diego Garcia
British Virgin Islands
total: 200 km
paved: 200 km (2007)
Brunei
total: 3,650 km
paved: 2,819 km
unpaved: 831 km (2005)
Bulgaria
total: 40,231 km
paved: 39,587 km (includes 331 km of expressways)
unpaved: 644 km (2005)
Burkina Faso
total: 92,495 km
paved: 3,857 km
unpaved: 88,638 km (2004)