Laser beam: Runway Incursion Prevention System?
There's so many incident reports of some moron pointing a green laser at an aircraft on approach. I was wondering whether this same technique could be modified to prevent runway incursions. What if aircraft granted takeoff clearance switched on a laser beam pointing straight down the runway; would this be a feasible warning sign to any potential intruders?
Alternatively maybe a beam triggered by some sort of stationary runway edge device if aircraft modifications are too expensive? How far do such beams run and what about weather and visibility?
Wonder what people think? Stupid idea? Reasons it won't work? Been tried before?