Hi James! No documents are required for the inspection. You can check your vehicle due date at Vicom's website or you may subscribe to their VSIR for a vehicle inspection reminder. https://www.vicom.com.sg/
After your vehicle has undergone all inspection stages and upon passing all the stages, you will be presented with an inspection certificate. Should your vehicle fail an inspection, you will be required to bring your vehicle back to Vicom for re-inspection.