Telehandlers are machinery which are designed to operate in rough terrain, however, that doesn't mean that they can be driven without any regard for the terrain. These types of machines have a a lot greater risk of load loss or tipping over when they are traveling on slopes.
When traveling on a slope, make sure 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. Utilizing the engine brake would help to control the telehandler's speed. Try not to turn on a slope if possible. If you must make the turn, utilize extreme care and take it as wide as possible.
Always try not to drive across excessively steep slopes. Use the heavy end of the telehandler pointing up the incline, when ascending and descending slopes. Even when there is no cargo on the forks, the counterweighted rear of the machine is quite heavy; therefore, it can be necessary to drive backwards up slopes. When the telehandler is carrying a cargo, the front of the unit becomes the heavy end, and you would be able to back the machine down the slopes.
Operator training is extremely essential on a mixed jobsite. Rear pivot equipment would often operate on the same jobsite of coordinated steering machinery, where everyone is permitted to operate all of the equipment. In this case, a person who is used to operating a coordinated steer machinery can jump onto a rear-pivot machine. A very key difference between how these two units work has a lot to do with what part of the machinery extends outside of the turning radius.