The message is right up front on this GRTC bus, spelling out the new requirement for all riders – a face mask. More than four months into the pandemic — and with 14 employees, including 13 drivers, testing positive for COVID-19 — GRTC imposed the requirement for passengers and drivers to wear a face mask. The company dropped all fares in March and expects to continue the free rides at least through next June. Drivers are allowed to bypass would-be passengers who are not masked. The transit company has acknowledged that it has no means to enforce the rule after passengers board, but hopes they recognize the common sense of wearing a mask to help reduce the spread of the coronavirus.