I don't know if this is the correct thread to ask dumb questions but I have one so ill give it a shot. I am studying for the astb and am in the process of memorizing the different tower signals (solid green, alternating, flashing red...) My question is how as a pilot do you know who the signals are directed at? All the pilots are looking at the same tower how does one know if the green light is for him to take off or another to land? Sorry if this is a bad question and the wrong place to post it..
Yes. The way the light is designed, you won't see it unless it is directed at YOU. Since the light is in the back of a tube, if you are off at some angle, you won't see it.
Imagine a laser. If you point the laser at someone, they can see it SUPER bright (and then they'll probably hit you). If you are looking at the source of the beam from even a slight angle, you don't see more than a dim red glow.
Same concept. If it's pointed at you, you'll KNOW it.
More importantly, these signals are only used if an aircraft is lost comms (can't communicate with the tower via radio). So if you're lost comms and you see a signal, what the hell are the odds there is another lost comms aircraft in the same pattern? Unless it's a ground issue, not very good. So assume it's for you if you're even slightly confused.