What document details the effective and expiration dates of a commercial vehicle's insurance?

The insurance policy is the correct document that details the effective and expiration dates of a commercial vehicle's insurance. This document outlines the specifics of the coverage provided, including the duration for which the policy is valid. It will clearly state when the coverage begins (effective date) and when it will cease (expiration date), ensuring that both the vehicle owner and any relevant parties are aware of the insurance status throughout the policy term.

In contrast, the vehicle registration primarily serves as proof that the vehicle is registered with the state, but it doesn't provide detailed information about insurance coverage. The title transfer document pertains to the ownership of the vehicle and also does not include insurance details. An inspection report primarily focuses on the condition and safety assessments of the vehicle, but it does not cover any insurance-related aspects.