What is the mandatory regulatory requirement regarding the physical display of the Taxi Driver Service Supervision Card (出租汽车驾驶员服务监督卡) inside the vehicle cabin?

1. It must be stored safely inside the vehicle glove box for inspection upon police request
2. It must be conspicuously displayed on the dashboard or passenger console showing the driver's photo, name, license number, and complaint hotline
3. It may be replaced by the driver's personal business card placed on the front seat
4. It is only required when transporting foreign passengers or government officials