Telehandlers are machines which are meant to operate in rough environment, although, that doesn't mean that they can be driven without any regard for the environment. These machinery have a much 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 machinery while also keeping the load low. Downshift to 4WD and a lower gear, before getting on the slope. Using the engine brake will help to control the telehandler's speed. Try to avoid turning on a slope if possible. If you need to make the turn, utilize extreme caution and take it as wide as possible.
Under any conditions, avoid driving across very steep slopes. Descend and ascend slopes with the telehandler's heavy end pointing up the incline. Even when there is no load on the forks, the counterweighted rear of the machinery is fairly heavy; thus, it can be necessary to drive in reverse up slopes. Once the telehandler is carrying a load, the front of the unit becomes the heavy end, and you can back the equipment down the slopes.
On a mixed jobsite, operator training is very important. The coordinated steering equipment, along with the rear-pivot equipment often operate on the same jobsite where everybody is permitted to use all of the machinery. In this instance, a person who is used to using a coordinated steer machine can jump onto a rear-pivot machinery. A really key difference between how these two units operate has a lot to do with which part of the machinery extends outside of the turning radius.