On June 1 2017, the Canada Border Services Agency (CBSA) implemented a 90 day evaluation period allowing drivers in the highway mode, who arrive without Advance Commercial Information (ACI) to turn around and return to the United States to wait for ACI.
The CBSA is extending the evaluation period and will continue to allow highway carriers to return to the United States to avoid ACI penalties until midnight December 31, 2017.
Carriers are reminded that they and not the exporter or  importer/broker are liable to ensure all ACI provided to the CBSA is true, accurate, and complete, including a detailed cargo description.
Additional information is available at the following link.