TREX-UVSS is an advanced Under Vehicle Scanning Solution (UVSS) that efficiently and safely controls the vehicle’s undercarriage.


TREX-UVSS is composed of a fixed or mobile shooting unit placed in the center of the traffic lane and a computing station with its processing application. It advantageously replaces the classic manual mirror control system.

As a vehicle drives over the scanner, the solution acquires automatically a high-resolution image of its undercarriage and recognizes its license plate.

Based on reference images, a powerful algorithm automatically detects any changes or foreign objects hidden under the vehicle and alerts the operator by displaying on the screen the potential areas of threats: weapon, explosive device, drug...

Once the inspection is completed, the operator authorizes or not the vehicle to pass. All data collected during process are stored in a shared database.



TREX-UVSS is designed to :

  • Acquire automatically a high-resolution image of the vehicle’s undercarriage whatever its length: car, truck, trailer…
  • Scan the vehicle in both directions.
  • Recognize automatically the license plate.
  • Detect automatically any changes or foreign objects hidden in the vehicle undercarriage by comparison with reference images stored in the database.
  • Alert operator in case of any threats detected.
  • Inspect quickly, fully, efficiently and safely for the operator the vehicle’s undercarriage at the entrance of sensitive sites.
  • Export all collected data to an SQL database.
  • Integrate with external host systems and traffic control equipment: video surveillance systems, barriers, road blockers…
  • Be efficient 24/7.
  • Resist to heavy vehicles.
  • Offer a powerful software suite with an intuitive graphical user interface.


TREX-UVSS is the ideal solution to ensure an efficient control of the vehicle’s undercarriage.


  • Increases safety by viewing a high-resolution image of the vehicle's undercarriage
  • Automatic comparison with an image of reference in order to compare and detect any changes or any suspicious foreign objects.
  • Accelerates vehicle control through a fast, global and precise inspection process of the vehicle's undercarriage.
  • Removes human risks through remote inspection of the vehicle’s undercarriage by the operator who is located in a secure area.
  • Records in a shared database all the data collected during inspection...
  • Simplifies vehicle inspection process.
  • Easy integration with external systems such as barriers, road blockers, traffic light, x-ray inspection systems, access control systems...

Main applications

Under Vehicle Scanning Solution for:

  • Official sites: embassies, ministries, governmental sites, military bases...
  • Sensitive sites: airports, border crossings, nuclear plants, gated communities, factories...
  • Commercial sites: car parks, hotels, malls...


Technical characteristics

  • Under vehicle scanning in high resolution regardless the length of the vehicle (car, truck, trailer…). Line scan or area scan capture technology.Automatic detection of any changes or foreign objects hidden in the vehicle's undercarriage by comparison with a reference image.
  • Automatic License Plate Recognition (ALPR/ANPR) compatible with license plates from over 80 countries, including Arabic and Cyrillic plates.
  • Multi-lane, multi-site database.
  • Multi-criteria authorizations management.
  • Exports all data collected (date, time, site, lane, plate number, high-resolution images...) to an SQL database (PostgreSQL, Microsoft SQL Server...) and shares them using the secured TREX Web Service.
  • Easy integration with third party application (security system, parking management…) and traffic control equipment (traffic lights, barriers, road blockers, variable message sign (VMS))...
  • Vehicle speed up to 20 km/h.
  • Fully efficient system 24/7.
  • Equipments :
    • IP66 scanner
    • Industrial high-resolution cameras
    • high-performance LED illumination.
    • Resistant to heavy vehicles up to 13T per axle.
    • Junction Box
    • Magnetic loops
    • Workstation
    • Static or mobile version
    • Specific development and adaptations to particular environments
    • Installation oversight of local technical team