Road Users Heavy commercial vehicles Vehicle standards for heavy commercial vehicles (HCVs).Types of HCVs and your obligations to maintain safety standards as a HCV operator. Introduction to heavy commercial vehicles Types of HCVs and your obligations to maintain safety standards as a HCV operator. Learn more Mirrors About blind spot mirrors and vulnerable road users (VRU) detection systems Learn more Loading and load securement Information and answers to frequently asked questions on loading and load securement. Learn more Reflective markings on heavy commercial vehicles Marking requirements for heavy commercial vehicles. Learn more Five axle trucks Information and answers to frequently asked questions on five-axle trucks. Learn more