Normally if left turns are not allowed at any instance at an intersection, there is a blatant and obvious indication of it; such as a sign or a red light. If you are facing a traffic light like the one pictured below, which had a left turning arrow that went yellow or disappeared, but still has a green light, then treat as you would any other left turn on a green traffic light. See this post for detailed information on turning left at traffic lights. It doesn’t tell you not to turn left, therefore, you can turn left as you usually would.
Hey, I’m Carmen, a being from Earth who has loved cars & driving for many moons. I became an ICBC GLP (graduated licensing program) driving instructor at the age of 22 in North Vancouver, Canada. The beautiful ‘North Shore’ was such a dream location. I’ve been working on this here website since 2012 when I created it.