Telehandlers are heavy duty work equipments made specifically to work in rough environment. This however, does not mean they could be driven without consideration on rough environment. These types of machines have a much bigger risk of tipping over or load loss when they are traveling on slopes.
If you do have to travel on a slope, ensure that you proceed slowly and carefully while keeping the load low. Prior to getting on the slope, downshift to 4WD and a lower gear. Using the engine brake will actually help to control the speed of the telehandlers. Try not to turn on a slope if possible. If you must make the turn, use extreme caution and take it as wide as possible.
Under any conditions, avoid driving across excessively steep slopes. Ascend and descend slopes with the telehandler's heavy end pointing up the incline. Even when there is no load on the forks, the counterweighted rear of the equipment is fairly heavy; thus, it could be required to drive backwards up slopes. When the telehandler is carrying a cargo, the front of the unit becomes the heavy end, and you would be able to back the machinery down the slopes.
Operator training is hugely important on a mixed jobsite. Rear pivot machinery would usually operate on the same jobsite of coordinated steering machines, where everyone is permitted to use all of the machines. In this case, an individual who is used to operating a coordinated steer machinery can jump onto a rear-pivot equipment. A very significant difference between how these two units operate depends on which part of the equipment extends outside of the turning radius.