Left turns on red are legal only if turning from a one-way street to another one-way street after a complete stop.

• A. You may turn on red in any situation if there is no cross traffic
• B. Left turns on red are illegal in all cases
• C. Left turns on red are legal only if turning from a one-way street to another one-way street after coming to a full stop
• D. You must obtain a police escort to turn left on red

Answer: (C)

Left turns on red are allowed only under a specific setup: you may turn left on red when you are moving from a one-way street onto another one-way street, and you must come to a complete stop and yield to all cross traffic and pedestrians, unless a sign specifically prohibits the turn on red. This one-way-to-one-way scenario reduces conflicts with oncoming or crossing vehicles, making the turn safer when you have a clear view and can proceed with caution after stopping. The other options don’t fit because they either ignore the one-way requirement, assume you can turn on red in any situation, or introduce an impractical or incorrect condition like needing a police escort.