Can you guess in which direction is the bus going?

I don’t have eyes, but once I did see. Once I had thoughts, but now I’m white and empty. What am I?
Riddle AnswerThere are some people on a train.
19 get off at the first stop. 17 get on. Now there are 63 people on the train.
How many were on the train to begin with?
Riddle AnswerA large truck is crossing a bridge 1 mile long. The bridge can only hold 14000 lbs, which is the exact weight of the truck. The truck makes it half way across the bridge and stops. A bird lands on the truck. Does the bridge collapse?
Riddle AnswerAs I was going to St. Ives, I met a man with seven wives. Each wife had seven sacks. Each sack had seven cats. Each cat had seven kits. How many were going to St. Ives?
Riddle Answer