All owners and operators of heavy vehicles (including U.S. motor carriers) must register with the Commission des transports du Québec and renew their registration every year. The registration will allow Quebec to evaluate the safety of owners, operators and drivers of heavy vehicles (including U.S. motor carriers) whose conduct presents a risk and if warranted, result in the imposition conditions on them, as needed, to correct the deficiencies observed.   You can find more details about obtaining, renewing registration on the Quebec Commission of Transportation

website.   https://www.ctq.gouv.qc.ca/en/owners_and_operators_of_heavy_vehicles.html