What must carriers maintain to comply with the International Registration Plan (IRP)?

To comply with the International Registration Plan (IRP), carriers are required to maintain accurate mileage records by jurisdiction. This is vital because the IRP is designed to streamline the registration process for commercial vehicles that operate in multiple jurisdictions, allowing carriers to pay registration fees based on the amount of mileage traveled in each state or province.

Maintaining precise mileage records helps ensure that fees are calculated correctly, reflecting the actual usage of the vehicle in different areas. Not only is this important for compliance with registration requirements, but it also helps carriers avoid penalties and ensures that they are contributing appropriate amounts to each jurisdiction where they operate.

While the other options listed—vehicle inspection records, employee driver logs, and maintenance schedules—are important for vehicle safety and operational efficiency, they do not specifically pertain to the compliance requirements of the IRP, which focuses on mileage tracking for the purpose of registration.