Skip to main content

Introducing the IRD SAW III portable dynamic scale system

International Road Dynamics’ (IRD) durable IRD SAW III portable wheel load weigher is now available for dynamic weighing; its user-friendly software enables users to efficiently pre-select overloaded trucks. Two IRD SAW scales are paired and connected to a PC via Bluetooth. When a vehicle drives over the scales at slow speed, the weighing result, wheel/axle weights and gross vehicle weight, is displayed on the screen. For weight enforcement with the highest accuracy the system can be switched to static oper
July 21, 2017 Read time: 2 mins
69 International Road Dynamics’ (IRD) durable IRD SAW III portable wheel load weigher is now available for dynamic weighing; its user-friendly software enables users to efficiently pre-select overloaded trucks.


Two IRD SAW scales are paired and connected to a PC via Bluetooth. When a vehicle drives over the scales at slow speed, the weighing result, wheel/axle weights and gross vehicle weight, is displayed on the screen. For weight enforcement with the highest accuracy the system can be switched to static operation mode. Computer-0based processing provides reporting, ticket printing and ticket archiving.

The system enables high vehicle throughput, especially when using two sets of IRD SAW scales, one set in dynamic mode for pre-selection and one in static mode for weight enforcement.

The low profile unit is designed to meet OIML R134 and it lightweight, rugged and corrosion resistant and suitable for twin tyre weighing.

Related Content

  • June 8, 2015
    ITS solutions to keep truck traffic moving
    David Crawford reviews freight management initiatives. Managing truck traffic to minimise its environmental impacts, without adversely impacting on its critical economic role, continues to drive ITS-based solutions in both urban and interurban contexts.
  • October 7, 2015
    Kistler WIM innovation wins accreditation
    A major weigh-in-motion (WIM) innovation being featured here at the ITS World Congress by Kistler has already won accreditation from the International Organisation of Metrology (OIML). To address the ever increasing problem of road surface damage caused by heavy transport, WIM systems employing Kistler quartz sensors have been delivering valuable traffic data for many years. There is also a long tradition in using WIM for preselection of overloaded vehicles.
  • November 8, 2023
    North Carolina DoT awards IRD $2.98m WiM contract
    New agreement creates a single statewide maintenance agreement with NCDoT
  • March 21, 2018
    Cross Zlin’s optical sensors increase options for WIM
    Having won the 2016 Intertraffic Innovation Award, Cross Zlin is back again with a host of new products including a shortlisted fibre-optic based weigh-in-motion system called OptiWim. Marketing manager Libor Sušil describes the system as weigh-in-free-flow as it measures the axle across the full lane width regardless of the position of the wheels and the sensor can also detect underinflated tyres even on twin wheel configurations. He likens the measuring method to that of a strain gauge but adds that