Bolivia
total: 62,479 km
paved: 3,749 km
unpaved: 56,730 km (2004)
Bosnia and Herzegovina
total: 21,846 km
paved: 11,425 km (4,686 km of interurban roads)
unpaved: 10,421 km (2005)
Botswana
total: 24,455 km
paved: 8,914 km
unpaved: 15,441 km (2004)
Brazil
total: 1,751,868 km
paved: 96,353 km
unpaved: 1,655,515 km (2004)
British Indian Ocean Territory
total: NA
paved: short section of paved road between port and airfield on
Diego Garcia
British Virgin Islands
total: 177 km
paved: 177 km (2002)
Brunei
total: 2,525 km
paved: 2,338 km
unpaved: 187 km (2000)
Bulgaria
total: 44,033 km
paved: 43,593 km (including 333 km of expressways)
unpaved: 440 km (2004)
Burkina Faso
total: 15,272 km
paved: 4,766 km
unpaved: 10,506 km (2004)
Burma
total: 27,000 km
paved: 3,200 km
unpaved: 23,800 km (2005)