Where is the Kenya truck driving school?

If you wish to become a truck driver in Kenya, what you need to do is enroll for a heavy commercial driving course at any driving school. Then once you earn your Kenya heavy commercial driving license, you need to find a way of entering the trucking industry. Perhaps you can consider going into the trucking industry as a ‘conductor/turnboy/drivers assistant.’  It is while working within the trucking industry that you would get exposed to the big trucks and semi-trailers, and once you understand how those work, you can book the test for  the semi-trailer driving license endorsement. And if you prove to be competent, you would get the endorsement entitling you to drive the big trucks/semitrailers...
That at least is the path that most of the people you see driving those big trucks followed. I don’t know if there is any driving school in Kenya that offers direct training for semitrailer and trailer class endorsements. What I know for a fact is that besides having the endorsement on your driving license, you also need to be ‘known’ within the industry before you can start getting jobs. That is why the idea of venturing in after getting your heavy commercial Kenya driving license is always a good idea, as you network and get known. This ensures that immediately you earn the big trucks driving license endorsement, you can get a job with some degree of ease, as you would already have gotten known in the ‘industry’ by that time.