The traffic lights are the same in every country.They are red，yellow and green.You can cross the street at he green light.You must stop and wait at the red light.The yellow light means " Slow down and stop " In China，we walk or drive on the right side of the road.When you cross the street，you must be very careful.You have to stop and look left first and then look right.But in Hong Kong，people walk or drive on the left side of the road.People must look right before they cross the road.The the traffic rules of HK traffic rules are different in Hong Kong.So when you take a trip to HK ，you must know.
