What documentation is NOT required by the highway traffic act to be carried in a commercial vehicle?

The highway traffic act outlines several key documents that must be carried in a commercial vehicle to ensure compliance with safety and legal regulations. Among these, insurance documentation, vehicle registration, and a driver's license are explicitly required.

However, a safety standard certificate is not mandated to be carried in a commercial vehicle while on the road. Instead, a safety standard certificate is required to prove that a vehicle meets safety standards at the time of its sale and is not something that needs to be presented during regular operation. Thus, while it is important for confirming a vehicle's compliance before being put into service, once that compliance is established, the certificate does not need to be actively carried by the driver during vehicle operation. Understanding which documents are specifically outlined by law helps ensure that drivers are well-prepared and compliant while on the road.