DiDi introduced DiDi Hero, a programme that offered up to two free trips per day and up to three free meals per week to medical staff, including administrative and cleaning personnel. Drivers were not charged company fees to enable them to profit from each rides' full rate. Additionally, sanitary measures such as plastic shields in the cars and hygiene gel were implemented to protect drivers and passengers. The programme has been extended twice, with varying service discounts. Close collaboration with the health authorities and clinics helped to communicate the programme to medical staff. In Mexico, DiDi Hero operates in 30 cities including Mexico City, Guadalajara and Monterrey.