You can find permits necessary for taxi service providers here. You can also find the requirements for taxi transport, the current laws of the field...
Tallinn is launching the “Ohutu koolitee” (Safe School Route) program to make the streets around every school in the city safer and more supportive of independent mobility for children. In addition to improving street safety, the initiative aims to enhance the overall quality of the surrounding urban space to encourage children to walk more and spend more time outdoors.