Related Clues:

• Pair of lamps, maybe
• Lighthouse
• It may be at the end of the tunnel
• Traffic controller
• Set fire to
• Be a polite driver, in a way
• Indicate silently
• Traffic signal
• Green ___
• Torch
• Word with show or artillery
• It stops traffic
• Flag or flare, perhaps
• Wave or wink
• Not very taxing