Left turn on red Five states, namely Alaska, Idaho, Michigan, Oregon and Washington, allow left turns on red into a one-way street, even from a two-way.

A: The answer is no. With signals like this, drivers have to follow the turn-signal lights, and if the left arrow signal isn’t green, they can’t make a left turn, even if the light for through traffic is green.

If you have a through traffic light and there’s a green light you have to give the right-of-way to oncoming traffic. So if the ‘left turn signal’ light is red and the through traffic light is green, you cannot go – you have to stay in the left turning lane and cannot proceed until that left turn signal turns green.

You can only turn left in these circumstances: You have a filter lane with a give way or stop sign that allows you to turn without going through the traffic lights. There are no emergency services vehicles passing through the intersection.

When the ‘B’ signal lights up, only buses can go through the intersection. This signal lights up shortly before the usual traffic lights change. When the ‘B’ signal turns red or yellow, buses must stop at the intersection.

Stop! You cannot legally make a left turn on a red arrow. It doesn’t matter if the traffic light is green or no sign is posted. “Section 21453 (c) of the California Vehicle Code essentially says that a driver facing a steady red arrow shall not move into an intersection.”

Generally speaking, red light at night doesn’t seem to interfere with sleep like blue light does. In fact, it may actually improve your sleep. While more research is needed, the current evidence seems to indicate that red light at night doesn’t disturb sleep.