Related Clues:

• Road sign
• Red's meaning, at times
• ''Freeze!''
• Bus destination
• ''Enough!''
• Market order
• Get off here
• 'I don't want to hear any more!'
• Instruction at many a corner
• Intersection sign
• Horse-drawn carriage
• Investor's order
• Hang it up
• Word on an octagon
• Proctor's call