Answer:
When it comes to me, you go on red and stop on green. What am I?
I am an instrument capable of making numerous sound but cannot be touched or seen.
Though not a plant I have leaves. though not a beast I have spine. Though many wouldn't need me I am more valuable than wine.
What kind of dog keeps the best time?
I am a protector of the scoreboard.
What did the grape do when he got stepped on?