There are possible solutions, like a voucher to enter that vendors could hand out to customers. The problem is the traffic density of 1st and Pike and the problems of clueless tourists doesn't go away. There is not an easy turnaround for a car that doesn't have a voucher and now your holding up traffic in an intersection, you see it every time the market does shutdown traffic. Cars at least go slow through the market, 1st is way more of a public safety issue with the speed for cars getting stuck and trying to turn around.