Possible Clues:

• It stops traffic
• Outstanding — information sent over a distance
• Gesture with meaning
• It's just a gesture, Albert, to put your name to this
• One to engage is some comfort, they say
• It hangs out on a street near you
• Indicate how to put your name to a half century
• Evidence from lags in stir
• Not noise that's noteworthy
• Very important message