If the aircraft is in flight, a steady green light signal from the control tower means cleared to land. If the aircraft is on the ground, it means cleared for takeoff. If the light is aimed at ground vehicles or foot traffic, steady green means cleared to cross the runway, or proceed.
It means get off the runway now, or, if flying, do not land here.
If you mean the light gun signals from the control tower- to vehicles, and aircraft on the ground, get off the runway. For aircraft in flight, runway is unsafe, do not land.
No such thing. If you mean Light's Shield Tower, or Light's Point Tower, both are located in Eastern Plaguelands.
clear for landing or takeoff.
stop or give way.
If it stays on steady, then you might have a bad driver in your engine control computer. If it throbs when you're cranking, that's relatively normal.
A red light - steady or flashing - means STOP. A steady amber light means Caution - signal about to change. A flashing amber light means SLOW DOWN.
EDC Stands for Electronic Diesel Control, A similar system to Fuel injection. If the light is on steady, then Drive the vehicle with caution, but get it seen to as soon as possible. If the light is flashing, don't drive the vehicle, and get it checked out immediately.
A steady yellow signal light at a traffic intersection means that the light is about to turn red, and drivers should prepare to stop safely before the intersection.
Power supply or motherboard is bad.
After stopping, you may turn right, unless prohibited by some other sign or signal.