You don't give enough detail in your example to say flat out, but, generally it will depend on what the city will allow. Peddlers often though are free to compete against each other. Your mileage may vary.....
Yes, as long as the spot you are looking at is properly zoned for your type of business. And the response below about bars being 1 to 3 miles apart is just wrong. Capitalism is all about competition. Sell your snow cones for less than the guy across the street!