Hitching for rides is common practice in Africa, though you may be expected to pay the driver.
Road safety in Africa leaves a lot to be desired, and seatbelts are not always fitted. Being stranded in remote areas could be a problem. Speaking English and French is an advantage. Portuguese in some countries. And learning African languages will make your trip much more pleasant. Some languages are understood in very large parts, such as Fulfulde and Bambara in West Africa.
Health
Malaria is common in many parts of Africa. Inform yourself and take precautions. Some forms of malaria are particularly deadly. The fact that local populations don't take any malaria prophelactics should definitely not stop you from taking any: Africans are much more resistant to malaria.
The United Nations Statistics Division defines Africa as following:
Northern Africa
Eastern Africa
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Middle Africa
Southern Africa
Western Africa
- Benin
- Burkina Faso
- Cape Verde
- Cote d'Ivoire
- Gambia
- Ghana
- Guinea
- Guinea-Bissau
- Liberia
- Mali
- Mauritania
- Niger
- Nigeria
- Senegal
- Sierra Leone
- Togo