The hazard
A forklift is heavy, it handles very differently from a car, and its load can block the driver's view. A load dropped from height can crush anything below it. Operators and people on foot share the same aisles, docks and yards, so both sides need to know the rules.
The action
Unauthorized people may not ride on a forklift. Where riding is authorized, a safe place to ride must be provided, and the forks or a pallet are not that place. No stunts or horseplay, ever, and keep your arms and legs inside the truck. (29 CFR 1910.178(m)(3))
ASK THE CREW
Where are the blind corners and cross aisles in our building or yard?
Takeaway: Only trained operators drive, check the truck every shift, stay within the rated capacity, and treat every blind spot as if someone is standing there.
From the talk: Forklift safety. Read it in full, free, with the questions and the sign-in sheet.