"We were testing the new measure [bus segregation] since the beginning of October. The results were satisfactory and now the buses are working under new plan," Hedayati told the state-run news agency ISNA on Tuesday.
The plan was first tested in April and May by the SSF. But it was postponed until now, SSF chief in Qazvin said.
Passenger buses running between Tehran and Qazvin are fully segregated and every possible effort is made to ensure the families' safety and security, Hedayati added.