prohibition of thattukada(street vendors) in ernakulam

It may look cruel because thousands make their earning from it.But if it spreads diseases and kills somebody prohibition is the shortcut.
All around the world there are street vendors.So instead of prohibiting, few practical guidelines may be introduced like passing medical exams to confirm he is not a carrier of diseases,passing of another exam to know his hygiene and safety standards,setting up minimum standard for his utensils and the surrounding,minimum distance between two vendors,etc.
Freedom comes from guidlines because if a beurocrat can check the guideline of the law ,
the vendor can also do the same. So give them the guidelines.It will reduce bribe.