Telehandlers are equipments that are meant to operate in rough terrain, however, that doesn't mean that they could be driven without any regard for the terrain. These equipments have a a lot greater 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. Utilizing the engine brake will really help to control the telehandler's speed. Try to avoid turning on a slope if possible. If you must make the turn, utilize extreme caution and take it as wide as possible.
Under any conditions, do not drive across excessively steep slopes. Descend and ascend slopes with the heavy end of the telehandler pointing up the incline. Even when the forks have no cargo, the counterweighted rear of the machinery is quite heavy; thus, it can be required to drive backwards up slopes. Once the telehandler is carrying a load, the front of the unit becomes the heavy end, and you can back the machine down the slopes.
On a mixed jobsite, operator training is very essential. The coordinated steering machines, along with the rear-pivot machines usually work on the same jobsite where everyone is allowed to operate all of the machinery. In this case, a person who is used to using a coordinated steer equipment could jump onto a rear-pivot machine. A very significant difference between how these two units work has a lot to do with which part of the equipment extends outside of the turning radius.