Usually when motorists enter a highway, be it 6 lanes or 4, although lanes on the right are empty, they still want to take their vehicles to the second lane, by doing this a driver will shrink the margin on the road, leaving only 1 lane to faster traffic, and that causes traffic jams, therefore, motorists should not change lanes to the left unless needed, and leave 2 or 3 lanes for faster traffic, also, never consider yourself a faster driver just because you think you are fast, see how many vehicles overtake you from the right, and that will give you a clue of how slow you are.