TZ International Driver's Licence (Dar es Salaam)

Hey,

We are 3 people who have driver's licence from the UK, CH, and SA and we would need an local driver's licence but I was wondering if Tanzania issued international driver's licence or only Tanzania ones.

My concern is that if any of us go "back home", we wouldn't be able to change our Tanzanian licence for a European one without re-doing all the tests.

Any comments, info welcome!

Thanks,
Nina