All non-commercial and commercial vehicles from the U.S. proceed through a primary inspection point located on the Mexican side of the bridge. Mexican Crossing Activities Only loaded trucks and vehicles being imported into Mexico are subjected to the Mexican truck inspection process. Empty trucks and tractors without trailers pass through inspection with all passenger vehicles. A central computer recognizes the document bar code and selects the trucks for primary inspection. The primary inspection is a freight-only inspection.
All trucks undergo the same inspection.
Commercial vehicles completing the primary inspection may be selected to undergo a secondary inspection. Some of the trucks completing the primary inspection are selected for the secondary inspection. The secondary inspection repeats the primary inspection, but it is conducted by a private contractor. Mexican Exit Inspection Documents are reviewed to ensure that the necessary inspections were conducted before the commercial vehicle is allowed to proceed to its final destination in Mexico.