Procedures, procedures, procedures!! You need clearly defined written procedures acounting for all interested parties.

Operator procedures, do's and don'ts, including horn use, visibility/obstructions, blind spots, verifying clear travel, travel speed, slowing down, stopping as required.

Pedestrian procedures, dedicated walkways, restricted areas, hazards of lift truck traffic. Train everybody on procedures. Enforce, enforce, enforce!!

Lights and alarms may be more than a nuisance. They may create another hazard if improperly applied. I detest "back-up" alarms on forklifts. Dump truck, ok, forklift, not! They beep in the wrong direction. If you add a travel alarm, have it beep in the "forks first" direction, which is the direction with obstructed view, and it will encourage travel in "forks following" direction, which provides the best view. Which direction was operator traveling when pedestrian was struck? Loaded or empty?

Establish dedicated pedestrian walkways, and restrict pedestrian traffic in areas where they have no business. When a forklift operator has to stop for a pedestrian, workflow and procuctivity is obstructed, affecting bottom line numbers. Don't want that, do you? Concave mirrors are very effective when all employees are trained, and required to use them. Remember, if you require it, you must enforce it, or it's not required.