Answer :
1. Red means stop, yellow means slow down or get ready depending in the directions its going, and green means GO! 2.I am not sure about that one. 3. Well the stop sign is giving you the information to stop, its also red like the red STOP light. 4. The driver should maybe call the company over the railroad thingy. That way no accidents can happen. 5. Im guess that you should just speed up a little bit, as long as you're safe.