During the annual Spring Thaw period, the Canadian government as well as the carriers apply restrictions to cargo weight. The maximum weight during this period is less than normal. Spring Thaw may occur at any time between mid-March and late May, but is subject to weather conditions. the thawing ice affects the roads, making them more easily susceptible to damage. All provinces in Canada have their own weight restrictions. The maximum allowable cargo weights vary per container and per province. The restrictions not only apply to the total cargo weight, but also to the distribution of the weight over the axles of the chassis.
