IN Brief:
- US Customs and Border Protection will begin a two-year voluntary truck Electronic Export Manifest test on 23 October.
- Initial manifest information must reach ACE at least 24 hours before US departure, with the complete filing due two hours before arrival at the final export port.
- Participation is limited initially to nine truck carriers capable of submitting the required data electronically through ACE.
US Customs and Border Protection will begin a voluntary Electronic Export Manifest test for truck cargo on 23 October, introducing advance carrier filing through the Automated Commercial Environment for selected road exports leaving the United States.
Participating carriers will submit seven initial manifest data elements electronically at least 24 hours before departure from the US. The complete export manifest must then be filed no later than two hours before the truck arrives at its final US port of export.
The programme is scheduled to run for approximately two years and will initially be limited to nine truck carriers. Applicants must have the technical capability to submit data through ACE, either using the Export Truck Manifest Trade Portal or electronic data interchange after completing the required certification.
The test introduces a new carrier filing process alongside existing export requirements rather than replacing the Electronic Export Information already required for many shipments. Under current rules, truck carriers generally do not submit an export cargo manifest to CBP, while the US Principal Party in Interest or its authorised agent files applicable Electronic Export Information.
For most truck exports, that information is currently transmitted and accepted generally no later than one hour before the vehicle reaches the US border to leave the country. The new test moves selected carrier data much earlier into the transport planning cycle.
The initial 24-hour submission includes information such as the bill of lading number, cargo quantity and weight, cargo description and shipper and consignee details. Further mandatory and conditional manifest data is supplied through the complete filing before arrival at the final port of export.
CBP intends to link carrier manifest information with the Electronic Export Information submitted for the shipment, giving the agency more time to assess risk and identify cargo requiring further attention before it reaches the border.
Earlier filing also changes the process for the businesses supplying data to the carrier. An operator cannot submit accurate information a day before departure unless exporters, brokers and other participants have prepared the underlying shipment record early enough.
That places greater emphasis on data readiness upstream of the truck. Product descriptions, quantities, consignee details and other shipment information that might previously have been finalised closer to departure may need to be available earlier for carriers participating in the test.
The two-stage structure allows some information to change between the initial filing and the completed manifest. That gives the process more flexibility than requiring the entire shipment record to be frozen 24 hours before departure while still giving customs officials an earlier view of the intended movement.
Road freight crossing into Canada and Mexico supports tightly linked industrial supply chains where border timing can influence factory and distribution schedules. A filing requirement that improves early risk assessment without lengthening physical border processing could support more predictable movements, while poor data quality could have the opposite effect.
The test therefore places as much emphasis on information accuracy as transmission speed. Sending incomplete or inconsistent data earlier does not provide the same operational value as a reliable record that can be matched across shipper, carrier and customs systems.
Carriers using electronic data interchange will also need compatible technology and message formats. The pilot requires successful certification before participation, creating an implementation task for transport management, customs and integration systems alongside the operational change.
CBP can place a hold on cargo identified as potentially high risk until additional information is supplied, an inspection is completed or another required action is taken. Once the shipment is cleared for loading, a release message can be transmitted to the filer.
The advance process is designed to bring that intervention earlier in the journey where possible. Finding a documentation or compliance problem before a truck reaches the border gives the organisations involved more opportunity to correct it without tying up a vehicle and driver at the final export point.
The voluntary test will also show how readily carriers can obtain complete information from the wider transaction. Transport operators often depend on exporters and intermediaries for commercial data, so the effectiveness of the system cannot be judged solely by whether the carrier’s connection to ACE works correctly.
Participation costs remain with the businesses taking part, and the test does not by itself make electronic truck export manifests mandatory across the market. Any wider requirement would follow a separate regulatory process.
The two-year programme consequently provides CBP with an operating test of both technology and timing. Its results will show whether truck manifest data can be gathered early enough to improve cargo targeting while fitting into the rapid cross-border processes used by industrial road freight.


