Know the capabilities and limitations of the lift you're using and never exceed it's capacity.
Read the operator's manual prior to use, and observe all warnings and cautions posted on the machine.
Be aware of clearances when moving and driving.
Maintain a safe distance from electrical lines; allow for swaying lines and platform sway, rock, and sag.
Always keep your attention in the direction of travel; if your view is obstructed, use a lookout.
If your lift has outriggers, retract them before driving.
Do not travel or use the lift on soft or uneven surfaces because the lift could tip.
You should use a full body harness and secure the harness to the proper attach bar on the platform; never attach to an adjacent object or structure.
When riding on the lift, or working from the platform, keep both feet planted firmly on the deck.
Never use steps, ladders, or similar items to extend your reach.
Be familiar with the location and operation of all alternate and override controls.
Always actuate controls with slow, even pressure.
Never push or pull the machine or anything else with the boom.
Always make sure the lift is stable before positioning the platform.
Shut off (and if appropriate, locko out) all power before performing any type of maintenance work.