jim f:

There are no universal material handling definitions for spotter or escort. The name used depends on the policy or regulation which defines the specific function(s) to be performed.

There are basically six types of functions that I'm aware of that could require operator assistance:

(1) Directing an operator's path of travel when the driver's vision is obscured. (forward vision for forklift operators, rear vision for backing vehicles such as trucks/trailers, etc.).

(2) Directing the positioning of a load (forklift, crane, etc.).

(3) Watching for proximity dangers (drop offs, overhead wires, hazardous material piping, etc.) during certain limited operations (forklift, crane, etc.).

(4) Escorting a forklift or other equipment to warn pedestrians and keep them clear of the hazard area. (furniture warehouse showrooms, home improvement centers, manufacturing shop floors, construction sites, etc.).

(5) Following a forklift or other piece of equipment on a public road to safeguard from other road vehicles and provide turn signals, brake lights, etc. for vehicle being protected.

(6) Accompanying a forklift or other vehicle to clear a path of travel where such travel could interfere with the travel of other vehicles. (travel requires movement in opposing lane, wide swing at intersection, etc.) (escorts for manufactured homes and other wide loads.).

Several other names are often used in such policies or regulations including : observer, designated person, signaler, signalman, flag person, guide, etc.