Cross-Border Freight Glossary

The US Customs and Border Protection (CBP) system that processes all imports and exports. ACE is the single window for submitting trade data to CBP electronically. Carrier, broker, and importer filings for cross-border freight are all submitted through ACE.

Additional fees charged by carriers beyond the base freight rate for services such as liftgate, inside delivery, residential delivery, detention, layover, or fuel surcharge. In cross-border freight, accessorial charges also include border crossing fees, compliance fees, and customs examination fees.

The US Census Bureau system used to report export shipments. For freight moving from the US to Mexico or Canada, shippers must file Electronic Export Information (EEI) through AES for shipments over $2,500 or requiring an export license.

The legal contract between a shipper and carrier documenting the freight being transported. A BOL serves as a receipt for the goods and establishes terms of carriage. In cross-border shipping, separate BOLs are typically required for each leg of the journey (US domestic, crossing, Mexico domestic).

A defined geographic area on the US side of the border where Mexican carriers can operate under Mexican authority without additional US DOT registration. Zones exist at major border cities. Mexican carriers without US operating authority can only operate within the commercial zone — they cannot travel beyond it into US interior.

Federal Motor Carrier Safety Administration (FMCSA) operating authority for freight brokers. An MC (Motor Carrier) number with broker authority is required to legally arrange transportation for compensation in the US. Brokers must maintain a $75,000 surety bond or trust fund agreement.

Unpackaged freight transported in large quantities — grains, liquids, sand, chemicals, coal. Bulk freight typically moves in specialized equipment like tankers, hoppers, or flatbeds. In US-Mexico trade, bulk agriculture (grains, produce) and petrochemicals are major bulk freight segments.

Customs-Trade Partnership Against Terrorism. A voluntary CBP program where companies implement supply chain security standards in exchange for reduced customs examinations, priority processing at borders, and access to the FAST lane. C-TPAT members cross the border faster and have fewer costly holds.

Mexico's mandatory electronic waybill required for all domestic cargo transport in Mexico as of 2022. Issued through the SAT (Mexico's tax authority) and attached to the CFDI (digital invoice). The Carta Porte contains detailed freight information — origin, destination, goods description, vehicle, and driver data. Non-compliance results in significant penalties.

Mexico's mandatory electronic invoice system. All commercial transactions in Mexico require a CFDI. For freight, the CFDI serves as the proof of payment between shipper and carrier. The Carta Porte addendum is attached to the CFDI to create the full transport documentation required by the SAT.

The billing document between buyer and seller that describes the goods, quantities, prices, and terms of sale. Required for all international shipments for customs valuation purposes. In US-Mexico trade, customs agents use the commercial invoice to determine duties and tariff classifications.

A specialized service provider at the US-Mexico border who coordinates the physical transfer of freight from a US carrier to a Mexican carrier (or vice versa). Crossing agents manage customs paperwork, arrange drayage to/from the bridge, coordinate customs broker filings, and handle physical transfer logistics. Also called a bridge agent.

A logistics practice where inbound freight is unloaded from one carrier, sorted, and immediately loaded onto outbound carriers with minimal or no storage time. Common at border facilities where US carriers transfer freight to Mexican carriers (or vice versa) without warehousing.

A licensed professional who prepares and files customs entries on behalf of importers and exporters. In US-Mexico trade, a US customs broker handles US Customs and Border Protection filings, while an agente aduanal handles Mexican customs (Aduana) filings. Most cross-border shipments require brokers on both sides.

Miles driven by a carrier without a load (empty). Deadhead is a major cost driver for carriers and affects freight rates. In cross-border freight, imbalanced trade flows between the US and Mexico create significant deadhead — more freight moves southbound than northbound in some corridors, leading to rate differentials.

A fee charged to shippers when loading or unloading takes longer than the free time allowed (typically 2 hours). At the border, detention can also occur when trucks are delayed waiting for customs clearance. Border detention can be extremely costly if a shipment is selected for examination.

Cross-border freight service where a single carrier or broker manages the entire journey from origin to destination, including the border crossing. The shipper doesn't need to manage separate carriers for each leg. D2D service requires carriers with operating authority on both sides of the border, or a strong cross-border broker network.

A unique identifier assigned by the FMCSA to commercial vehicles operating in interstate commerce. Required for carriers operating in the US. Mexican carriers seeking US authority (for operations beyond the commercial zone) must obtain a US DOT number in addition to their Mexican SCT registration.

Short-distance trucking moving freight to or from a terminal, port, or border crossing. At US-Mexico border crossings, drayage carriers move trailers across the bridge (since many US carriers cannot cross into Mexico and many Mexican carriers cannot operate in US interior). Drayage is a specialized and critical part of the cross-border logistics chain.

A service where a carrier drops an empty trailer at a shipper's facility for loading, picks it up later, and delivers to destination. Common at high-volume manufacturing plants with consistent output. Drop trailer programs reduce detention, improve carrier efficiency, and are preferred by plants with slow or complex loading operations.

Mandatory device for commercial trucks operating in the US that electronically records Hours of Service (HOS). Required by FMCSA for all US-regulated carriers. Mexican carriers operating in the US with US authority must also use ELDs, though the Mexican authority (SICT) has separate HOS rules for domestic Mexico operations.

Time-critical freight moved faster than standard LTL or FTL service. Typically handled by dedicated team drivers, sprinter vans, or air cargo. In cross-border freight, expedited service is complex because of border crossing time variability — a shipment can clear quickly or be held for days for inspection.

A joint Canada-US-Mexico trusted trader program that expedites border crossings for pre-approved importers, carriers, and drivers. FAST lane access means shorter wait times at commercial crossings. Eligibility requires C-TPAT membership (shippers) and FAST-certified carriers and drivers. A major competitive advantage at high-volume crossings like Laredo.

A shipping container used exclusively for one shipper's cargo. Common in ocean freight, but also used in US-Mexico intermodal rail. FCL is more cost-effective than LCL (Less than Container Load) for high-volume shippers and provides better security and reduced handling damage.

Federal Motor Carrier Safety Administration — the US agency regulating commercial motor vehicles. FMCSA issues carrier authorities (MC numbers), sets Hours of Service rules, oversees safety ratings, and regulates broker licensing. FMCSA's SAFER database is the authoritative source for carrier safety data.

Freight that fills an entire trailer (typically 40-48 ft). FTL is direct — one origin to one destination — and generally faster than LTL since there are no multiple stops. Most manufacturing cross-border freight moves FTL due to volume and the difficulty of consolidating freight across the border.

A variable fee added to freight rates to account for fuel price fluctuations. Typically indexed to the US Department of Energy weekly diesel price index. In cross-border freight, FSC may be calculated separately for US and Mexico legs as Mexican diesel prices and consumption differ from US standards.

Freight classified as dangerous goods under US DOT or international regulations. Requires special handling, documentation (manifests, placarding), and certified drivers. Cross-border hazmat requires additional Mexican permits (permiso) and compliance with both US DOT and Mexican NOM regulations. Chemical manufacturers and oil/gas companies are major hazmat shippers.

FMCSA regulations limiting driving hours for commercial truck drivers. Drivers may drive a maximum of 11 hours after 10 consecutive hours off duty. The 14-hour rule limits the total on-duty window. In cross-border freight, HOS can be complicated by border wait times — time spent waiting at a crossing counts against the driver's clock.

Mexico's export manufacturing program, successor to the original maquiladora regime. Companies with IMMEX certification can temporarily import raw materials, components, and equipment from the US duty-free for use in manufacturing goods that will be exported. The program is the legal backbone of Mexico's export manufacturing sector and most major nearshoring plants operate under it.

Freight transported using two or more modes of transportation (e.g., truck + rail) in a single seamless journey using standardized containers. US-Mexico intermodal (KCSM, BNSF, Union Pacific) provides cost-effective high-volume service between interior Mexico and US markets. Slower than FTL but significantly cheaper for non-time-critical freight.

The largest commercial land border crossing in the world, handling approximately 40% of all US-Mexico trade by value. Laredo sits across from Nuevo Laredo, Tamaulipas. The primary commercial bridges are the World Trade Bridge and Colombia Solidarity Bridge. Laredo is the gateway for Nuevo León (Monterrey), Coahuila (Saltillo), and most of northeast Mexico's manufacturing output.

Freight that doesn't fill an entire trailer, consolidated with other shippers' goods on the same truck. LTL is priced by weight and distance (using freight classes). Cross-border LTL is more complex than domestic because of customs clearance requirements for each consignment — many brokers specialize exclusively in FTL cross-border due to this complexity.

A manufacturing or assembly plant in Mexico that imports materials and equipment duty-free from the US, manufactures or assembles goods, and exports them back (primarily to the US). Originally concentrated at the border, maquiladoras now operate throughout Mexico under the IMMEX program. Major industries: automotive, electronics, apparel, medical devices, aerospace. Over 5,000 IMMEX-certified plants operate in Mexico, employing 2+ million workers.

Motor Carrier operating authority number issued by FMCSA. Carriers need an MC number with for-hire authority to legally transport freight for compensation in the US. Brokers need an MC number with broker authority. Freight brokers verify carrier MC numbers before booking loads using the FMCSA SAFER database.

The relocation of manufacturing or business operations to a nearby country — in the North American context, this typically means US companies moving production from Asia to Mexico. Driven by supply chain resilience goals, rising Asian labor costs, USMCA trade incentives, and logistics advantages. Nearshoring is the primary growth driver for US-Mexico cross-border freight volume.

Mexico's trusted trader program (Nuevo Esquema de Empresas Certificadas), the Mexican equivalent of C-TPAT. NEEC-certified companies receive expedited customs processing, reduced examination rates, and other facilitation benefits from Mexican Customs (Aduana). The program is jointly administered with the SAT.

A CBP program allowing highway carriers to submit electronic documentation for US-bound shipments before arriving at the border. PAPS pre-clearance speeds up crossing times by allowing CBP to review and release shipments in advance. Required for most commercial US-southbound-then-returning freight.

Canada Border Services Agency (CBSA) program allowing highway carriers to submit shipment data before arrival at the Canadian border. PARS is the Canadian equivalent of PAPS. Required for commercial highway shipments entering Canada.

The official Mexican customs declaration form submitted by a licensed agente aduanal for all commercial imports and exports crossing the Mexico border. The pedimento is the legal document that determines duties, classifies goods under Mexico's tariff schedule, and authorizes the crossing. Every commercial cross-border shipment into or out of Mexico requires a pedimento.

An official location where international travelers or freight cross a national border under government supervision. US-Mexico commercial POEs include Laredo, El Paso/Juárez, McAllen/Pharr, Brownsville/Matamoros, Nogales, Eagle Pass, San Diego/Otay Mesa, and others. Each POE has specific hours of operation, bridge capacity, and inspection capabilities.

A trailer with a refrigeration unit capable of maintaining controlled temperatures. Used for perishable freight: produce, meat, dairy, pharmaceuticals, flowers. Mexico is the US's top source for fresh produce, making Nogales and McAllen major reefer crossing points seasonally. Pharmaceutical reefer is a high-margin cross-border niche due to strict temperature documentation requirements.

The practice of bringing manufacturing back to the home country after it was previously offshored. In the US context, reshoring means bringing production back from Asia. Distinct from nearshoring (moving to Mexico rather than back to the US). Both trends create freight opportunities — reshoring increases US domestic freight; nearshoring grows cross-border freight.

Mexico's federal taxpayer registration number, equivalent to the US EIN. Required for all entities operating in Mexico. The RFC is used on CFDIs, pedimentos, and Carta Porte documents. When researching Mexican carriers or shippers, the RFC is the authoritative business identifier.

Mexico's tax administration service — the IRS equivalent. SAT administers the CFDI and Carta Porte system, collects taxes, and oversees fiscal compliance for all businesses in Mexico. Non-compliance with SAT's Carta Porte requirements results in fines and operational disruptions for carriers and shippers.

The company or entity that tenders freight for transportation — the customer in the freight transaction. In the context of GetFreight.ai, "shippers" refers to manufacturers and industrial companies that regularly move freight (as opposed to freight brokers who arrange transportation on their behalf). A strong shipper relationship is the foundation of a freight broker's book of business.

A Mexican in-transit customs document allowing foreign freight to pass through Mexico without paying import duties. T1s are used when freight originates in the US, transits through Mexico, and continues to a third country (or vice versa). T1 operations require bonded carriers and strict timing compliance — failure to complete the transit results in the full duty obligation.

The process of transferring freight from one transportation mode or vehicle to another. Common at US-Mexico border facilities where US-registered trailers cannot cross and freight must be transferred to Mexican equipment (or vice versa). Transloading facilities near major border crossings have become major logistics infrastructure investments.

A company that provides outsourced logistics services to shippers — typically including freight brokerage, warehousing, customs brokerage, and supply chain management. A 4PL manages the 3PLs. In cross-border freight, 3PLs with Mexico expertise handle everything from carrier selection to customs compliance, making them attractive partners for manufacturers expanding into Mexico.

The United States-Mexico-Canada Agreement, which replaced NAFTA in July 2020. USMCA governs trade between the three countries, establishing rules of origin (especially for automotive), intellectual property protections, digital trade provisions, and labor standards. Products meeting USMCA rules of origin cross duty-free between the three countries — a major incentive for North American manufacturing investment. USMCA is scheduled for review in 2026.

Services performed on freight beyond basic transportation — kitting, labeling, repackaging, inspection, assembly. Common in maquiladora-adjacent warehouses (foreign trade zones and bonded warehouses near the border) where US components are assembled or processed before export. VAS creates additional revenue opportunities for logistics providers in the nearshoring ecosystem.

The primary commercial crossing at Laredo, Texas — the busiest commercial land border crossing in the world. The bridge connects Laredo, TX to Nuevo Laredo, Tamaulipas and handles the majority of Laredo's cross-border commercial truck traffic. Opened in 2000 specifically to handle the surge in trade following NAFTA, it processes thousands of commercial vehicles daily.