Telehandlers are heavy duty work equipments produced specifically to work in rough environment. This however, does not mean they could be driven without consideration on rough environment. These machines 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, make sure that you proceed carefully and slowly while keeping the load low. Prior to getting on the slope, downshift to 4WD and a lower gear. Using the engine brake would help to control the speed of the telehandlers. Try to avoid turning on a slope if possible. If you need to make the turn, use extreme care and take it as wide as possible.
Always try to avoid driving across very steep slopes. Utilize the telehandler's heavy end pointing up the incline, when descending and ascending slopes. Even when the forks have no load, the counterweighted rear of the machine is fairly heavy; therefore, it could be necessary to drive in reverse up slopes. When 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 really essential. The coordinated steering equipment, along with the rear-pivot machines often work on the same jobsite where everyone is allowed to utilize all of the machinery. In this case, a person who is used to operating a coordinated steer machine could jump onto a rear-pivot machine. A really significant distinction between how these two units operate has a lot to do with what part of the machine extends outside of the turning radius.