Telehandlers are machinery that are meant to operate in rough terrain, however, that doesn't mean that they can be driven without any consideration for the environment. These types of equipments have a a lot bigger risk of tipping over or load loss when they are traveling on slopes.
If you do have to travel on a slope, make sure that you proceed slowly and carefully while keeping the load low. Before getting on the slope, downshift to 4WD and a lower gear. Utilizing the engine brake would actually help to control the telehandler's speed. Try not to turn on a slope if possible. If you have to make the turn, utilize extreme care and take it as wide as possible.
Under any circumstances, do not drive across very steep slopes. Ascend and descend slopes with the telehandler's heavy end pointing up the incline. Even when the forks have no load, the counterweighted rear of the machinery is fairly heavy; therefore, it could be required to drive in reverse up slopes. When the telehandler is carrying a cargo, the front of the unit becomes the heavy end, and you could back the machine down the slopes.
Operator training is extremely important on a mixed jobsite. Rear pivot equipment would normally operate on the same jobsite of coordinated steering equipment, where everybody is permitted to operate all of the equipment. In this instance, an individual who is used to using a coordinated steer machinery could jump onto a rear-pivot machinery. A very significant distinction between how these two units operate has much to do with what part of the machine extends outside of the turning radius.