(DC)- The D.C. Mayor is requiring face coverings on all public transportation beginning this weekend. The guidelines include riders on Metrorail and Metrobus. She says that masks must be worn in stations as well. Anyone riding in taxis and ride services such as Uber or Lyft will also be required to wear face coverings. Employers will be mandated to provide their employees with the supplies they will need. The new rules go into effect on Saturday.