What are five action that may cause a forklift truck to over sideways?

1 Unbalanced load

2 Brakes only operate on one side of the truck

3 Travelling at right angles along an inclined slope

4 Travelling too fast when turning

5 Worn tyres on one side of the truck

6 Uneven and muddy terrain

7 Inexperienced and untrained forklift truck driver