Telehandlers are heavy duty work machines made particularly to work in rough terrain. This however, does not mean they could be driven without regard on rough environment. These kinds of machinery have a a lot greater 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 equipment while also keeping the load low. Downshift to 4WD and a lower gear, before getting on the slope. Using the engine brake would help to control the speed of the telehandlers. Try not to turn on a slope if possible. If you have to make the turn, take it as wide as possible and use extreme caution.
Under any circumstances, do not drive 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 cargo, the equipment's counterweighted rear is quite heavy; hence, it could be necessary to drive backwards up slopes. Once the telehandler is carrying a load, the front of the unit becomes the heavy end, and you could back the machine down the slopes.
On a mixed jobsite, operator training is very important. The coordinated steering equipment, along with the rear-pivot machinery often work on the same jobsite where everyone is allowed to operate all of the machines. In this instance, an individual who is used to operating a coordinated steer machine can jump onto a rear-pivot machine. A really significant distinction between how these two units operate has much to do with which part of the equipment extends outside of the turning radius.