For a first-time visitor to East Africa self-drive vehicle are not advisable. Some of the tarmac roads are in poor condition and the traffic is heavy. Most of the roads to the National Parks and Reserves are gravel roads, which are very rough and can become a treacherous sea of mud during the rainy season. If you still insist on driving on your own, you need an international driving license. Self-drive vehicles are commonly available in Rwanda and Kenya but not in Tanzania, Ethiopia and Uganda. Crossing international borders in East Africa is also not possible with rented self-drive vehicles.