On March 24, it stopped all rush-hour services until further notice.[21] On March 26, the agency began "dynamic service" to pick up customers left at bus stops by too-full buses; the agency's current policy is for a maximum of 20 passengers per bus.[22] On March 28, a COTA bus operator tested positive for the disease.[23] On March 30, COTA suspended service on routes 21, 25, and 35.[21] On April 7, a second driver tested positive for the disease.[24] On the 11th, the agency announced it will require passengers to wear face masks.[25]