I get Seppuku's point, 110km/hr should be the maximum speed so nobody should be overtaking you!!!!.....why then stick to the left and change lanes every now and then as you overtake the slower ones???

Driving lesson number 2384: The maximum speed limit on Thika highway is 100km/h; not 110km/h. It was reduced after the expansion - only God knows why!

Driving lesson number 2169: There is nothing like a "fast lane" in the highway code. All vehicles must be driven on the left-most lane even if the road has 10 lane! The only exception is when you are overtaking.

Driving lesson number 1575: You should never overtake a vehicle from the left hand side.

Hope that clears things up.

The problem is that nowadays, there are no driving lessons to speak of and the driving test is one big sham!

Ideally the different lanes should have different speed limits[minimum].
The outer most lane is for utility vehicles and buses,the second outer most for heavy trucks,the next for slow moving and lastly,the inner most for the fastest.

Not unless you drive with your eyes on the speedometer, you wouldn't know when you drop to 95kmh,so unless overtaking,leave the inner most lane alone. I see guys driving at 80kmh and hogging the inner most lane,it should be made illegal.

Is this even a question? No wonder I see some people driving on the right, with a trailer on the left moving slowly, and this guy on the smaller is just not overtaking the trailer causeing lot's of obstruction behind him and he feels nothing.

Please guys maintain left when you're not overtaking. It'll minimise faster drivers from swaying from left to right, manouvering.