Sao Tome and Principe
total: 320 km
paved: 218 km
unpaved: 102 km (1999 est.)
Saudi Arabia
total: 151,470 km
paved: 45,592 km
unpaved: 105,878 km (1999)
Senegal
total: 14,576 km
paved: 4,271 km including 7 km of expressways
unpaved: 10,305 km (2000)
Serbia and Montenegro
total: 49,805 km
paved: 31,029 km (including 560 km of expressways)
unpaved: 18,776 km (2000)
Seychelles
total: 373 km
paved: 315 km
unpaved: 58 km (1997 est.)
Sierra Leone
total: 11,330 km
paved: 895 km
unpaved: 10,435 km (1999)
Singapore
total: 3,066 km
paved: 3,066 km (including 150 km of expressways)
unpaved: 0 km (1999)
Slovakia
total: 42,717 km
paved: 37,036 km (including 296 km of expressways)
unpaved: 5,681 km (2000)
Slovenia
total: 20,177 km
paved: 20,157 km (including 427 km of expressways)
unpaved: 20 km (2000)
Solomon Islands
total: 1,360 km
paved: 34 km
unpaved: 1,326 km (1999 est.)