"No Turn ___" (street sign)

ONRED

Think of the color that often appears on stop signs and signals when you must come to a complete halt before proceeding.

This clue references a common traffic sign that prohibits right turns during a red light. "No Turn on Red" is often abbreviated on signs as "NO TURN ON RED," so the answer is simply the last part of that phrase. The capitalization in the clue hints at the answer being a continuous string without spaces, making it "ONRED." It’s a straightforward fill-in based on real-world signage.