effective from March 15, 2007 until May 26, 2007 following weight limitations apply for truck transports in Canada:

20ft standard container       up to 35,000 lbs cargo weight 
                                        tandem chassis
20ft reefer container           up to 33,000 lbs cargo weight 
                                        tandem chassis
40ft standard container       up to 48,000 lbs cargo weight
                                        tri-axle chassis
40ft reefer container           up to 46,000 lbs cargo weight
                                        tri-axle chassis

For further details please also check following official website:
www.mtq.gouv.qc.ca/en/camionnage/charges/degel_zones.asp

Please contact your local OOCL office in case of any questions.