A foreign visitor wishes to drive in Botswana. Which statement is correct?

1. A foreign licence may be used for at most 30 days per calendar year
2. A foreign licence may be used for a maximum of 90 days in any calendar year, or an International Driving Permit for the life of the permit
3. A foreign licence may be used for up to one year
4. Foreign licences are valid indefinitely and never need conversion