According to the Provisions on the Administration of Road Transport of Dangerous Goods (the Provisions on the Administration of Road Dangerous Goods Transport (MOT Order 2013 No. 2, as amended)), what periodic inspection documentation must a tank vehicle (罐式车辆) hold before engaging in dangerous chemicals transport?

1. A valid Tank Inspection Certificate (常压/压力罐体检验合格证书) issued by a certified statutory inspection agency, along with a Vehicle Road Transport Certificate
2. Only a self-written inspection letter signed by the truck driver
3. A commercial fuel receipt from an authorized highway gas station
4. A temporary municipal sanitation pass issued by the local street committee