On traffic lights it means slow down.
A traffic signal displaying a steady circular yellow light means that you should use caution when going through the intersection. You have the right away, but watch for other cars.
After stopping, you may turn right, unless prohibited by some other sign or signal.
A steady white light often indicates that a device is functioning properly or is in a standby mode, depending on the context. it could also indicate a low power or battery status.
Blue light has a higher frequency compared to yellow light.
Red and green light. Yellow glass transmits yellow light. Yellow light is a combination of red and green light. Therefore yellow glass transmits red and green light and absorbs blue light.
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.
A steady yellow light indicates that drivers should slow down and prepare to stop, as the traffic signal is about to change to red.
A steady yellow traffic light indicates that the traffic signal is about to change to red, and drivers should prepare to stop safely.
A traffic signal displaying a steady circular yellow light means that you should use caution when going through the intersection. You have the right away, but watch for other cars.
A steady (instead of flashing) yellow light means the traffic signal is changing from green to red. You must stop if it's safe to do so. If you're already stopped you must not proceed.
Prepare to stop
clear for landing or takeoff.
stop or give way.
A steady blue flame with no white or yellow flickering.
It could mean there's a problem with the electrical mechanics of the car.
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.
A flashing yellow light is the same as a caution signal, indicating that drivers should slow down and proceed with caution. It alerts them to potential hazards or intersections ahead where they may need to yield or stop. Unlike a steady yellow light, which signifies that the light is about to turn red, a flashing yellow does not require a complete stop.