The Atlantic provinces Trucking Association shared the following notice with OTA regarding spring weight restrictions in Quebec and Atlantic Canada:
New Brunswick
Southern NB March 4th (00:01) to May 12th (23:59)
Northern NB March 11th (00:01) to May 19th (23:59)
https://www2.gnb.ca/content/gnb/en/departments/dti/trucking/content/spring_weight_restrictions.html
Quebec
Zone 1 March 4th (00:01) to April 12th (23:59) *New End Date*
Zone 2 March 18th (00:01) to May 10th (23:59)
Zone 3 March 18th (00:01) to May 10th (23:59)
Nova Scotia
March 3rd (23:59) – For the following counties:
Annapolis, Digby, Yarmouth, Shelburne, Lunenburg, Queens, Kings, Halifax, Hants, Colchester, Cumberland, Pictou, Antigonish, Guysborough, Cape Breton, Inverness, Richmond and Victoria.
https://novascotia.ca/tran/trucking/springweight.asp
Prince Edward Island
Effective March 5th (00:01), seasonal weight restrictions will be in effect.