Telehandlers are heavy duty work machines produced specially to operate in rough terrain. This however, does not mean they can be driven without consideration on rough terrain. These kinds of machinery have a much bigger risk of tipping over or load loss when they are traveling on slopes.
When traveling on a slope, make sure that you move slowly with the machine while also keeping the load low. Downshift to 4WD and a lower gear, prior to getting on the slope. Using the engine brake would help to control the telehandler's speed. Try to avoid turning on a slope if possible. If you have to make the turn, take it as wide as possible and use extreme care.
Under any conditions, avoid driving across excessively steep slopes. Ascend and descend slopes with the heavy end of the telehandler pointing up the incline. Even when there is no load on the forks, the equipment's counterweighted rear is quite heavy; hence, it can be required to drive in reverse up slopes. When the telehandler is carrying a load, 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 very important. The coordinated steering machines, along with the rear-pivot machines often work on the same jobsite where everyone is permitted to operate all of the machines. In this case, an individual who is used to utilizing a coordinated steer machinery can jump onto a rear-pivot machine. A really significant difference between how these two units work depends on which part of the equipment extends outside of the turning radius.