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
1) Yellow flashing light of a stop light. 2) when the yellow light for a "school zone" is flashing.the yield sign, the school crossing sign, and the yellow light are all signs of you must slow down.
When a yellow light is flashing at an intersection, a driver must proceed with caution and be prepared to stop if necessary.
After stopping, you may turn right, unless prohibited by some other sign or signal.
A traffic light is placed at an intersection of two or more roadways. Each approach of the intersection has at least one signal head with three bulbs (red, yellow, and green) facing it. Cars approaching the intersection can go through it if the light facing them is green and cannot go through it when the light is red. Signals go from green to yellow (to slow down for the red) to red and then back to green. Only one of the two roads at a signalized intersection can have a green light at one time and the traffic on the other road must wait for the light facing them to turn green.
When approaching an intersection with a flashing yellow light, a driver must proceed with caution and be prepared to yield to oncoming traffic or pedestrians.
Yellow is a primary color in pigments. This means you must start with yellow paint. In projected lights, such as theatre lights or tv/computer monitors, mix red and green light for yellow light.
A flashing yellow arrow light means you may turn left, but you must yield to oncoming traffic and pedestrians.
Vehicles approaching a school bus with its yellow lights flashing must stop.
To get white light, you must mix all the colors (red, orange, yellow, green, blue, indigo, and violet)
Red and green light must be combined with blue light to obtain white light, using the additive color mixing process.
The answer depends on where the vehicle is registered. In the US and Canada, some states and provinces specifically require headlamps to produce white light. Others say headlamps must conform to the applicable Federal standards (which specify white light). But some states and provinces only say that all front-facing lamps must produce white or yellow (or "white to yellow", or "white or amber", or "white to amber") light. And some state that front lamps must produce white light unless they were originally manufactured to produce another color. Some countries (Brazil, New Zealand, Japan, the Netherlands and others) have in the past permitted headlamps to produce white or yellow light. Some of them still do. France required yellow headlights from the 1930s to the early 1990s; they're no longer required there but they remain permitted. So you will have to check exactly what the vehicle equipment requirements are in your own jurisdiction to have a usable answer to this question.