Telehandlers are machines which are designed to work in rough terrain, although, that doesn't mean that they can be driven without any regard for the terrain. These equipments have a much bigger risk of load loss or tipping over when they are traveling on slopes.
When traveling on a slope, make certain that you move slowly with the machinery while also keeping the load low. Downshift to 4WD and a lower gear, prior to getting on the slope. Using the engine brake would really help to control the telehandler's speed. 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 very steep slopes. Descend and ascend slopes with the heavy end of the telehandler pointing up the incline. Even when the forks have no load, the counterweighted rear of the machinery is fairly heavy; hence, it can be necessary to drive in reverse up slopes. Once the telehandler is carrying a cargo, the front of the unit becomes the heavy end, and you would be able to back the equipment down the slopes.
Operator training is extremely vital on a mixed jobsite. Rear pivot equipment would usually operate on the same jobsite of coordinated steering equipment, where everyone is allowed to operate all of the equipment. In this instance, an individual who is used to utilizing a coordinated steer machine can jump onto a rear-pivot machinery. A very key difference between how these two units operate depends on what part of the machinery extends outside of the turning radius.