Do traffic lights have digital time-varying lights and yellow lights?

traffic lights have digital time-varying lights and no yellow lights. According to the relevant information, the new version of traffic lights has changed to use countdown numbers instead of yellow waiting lights, so traffic lights have digital time-varying lights without yellow lights. You can turn left when the green arrow to the left lights up on the signal light. If there is no arrow sign to the left and there is only a green light, you can turn left when the green light is on. Generally speaking, after the red light counts down, you turn left, and you can only go straight after the left turn counts down. It is forbidden to turn left at some intersections, so you should see clearly.