Telehandlers are heavy duty work machines produced specially to operate in rough environment. This however, does not mean they could be driven without consideration on rough environment. These equipments have a a lot bigger risk of load loss or tipping over when they are traveling on slopes.
If you do need to travel on a slope, make sure that you proceed carefully and slowly while keeping the load low. Before getting on the slope, downshift to 4WD and a lower gear. Using the engine brake will really help to control the telehandler's speed. Try not to turn on a slope if possible. If you need to make the turn, utilize extreme care and take it as wide as possible.
Under any circumstances, avoid driving across extremely steep slopes. Descend and ascend 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 machinery is quite heavy; therefore, it could be necessary to drive backwards up slopes. Once the telehandler is carrying a cargo, the front of the unit becomes the heavy end, and you will be able to back the equipment down the slopes.
On a mixed jobsite, operator training is really vital. The coordinated steering machines, along with the rear-pivot equipment normally work on the same jobsite where everyone is allowed to operate all of the equipment. In this instance, an individual who is used to using a coordinated steer equipment can jump onto a rear-pivot equipment. A very key difference between how these two units work has a lot to do with which part of the machinery extends outside of the turning radius.