Skip to main content

Intrusion warning improves workzone safety

Transpo Industries launched a unique concept in work zone intrusion protection last year. The SonoBlaster impact-activated safety device warns both roadway workers and errant vehicles simultaneously. When impacted, the unit's built-in CO2-powered horn blasts loudly (125 dB) for 15 seconds, signalling crews that their work zone has been violated. This provides critical reaction time to move out of harm's way. The company says there are also resultant safety benefits for the driver, who may be able to take ev
January 31, 2012 Read time: 1 min


Transpo Industries launched a unique concept in work zone intrusion protection last year.

The SonoBlaster impact-activated safety device warns both roadway workers and errant vehicles simultaneously. When impacted, the unit's built-in CO2-powered horn blasts loudly (125 dB) for 15 seconds, signalling crews that their work zone has been violated. This provides critical reaction time to move out of harm's way. The company says there are also resultant safety benefits for the driver, who may be able to take evasive action.

 Since its launch, Transpo says that as a result of customer feedback from deployments in over 27 US states as well as seven different countries, a stackable cone bracket has been added to the device so the Sonoblaster can remain mounted and ready to use on a work truck.

Related Content

  • TxDOT unveils high tech workzone warning system
    May 3, 2013
    With more roadway construction underway than ever in the state, the Texas Department of Transportation (TxDOT) is introducing its first highway safety feature that incorporates a queue warning system and temporary rumble strips to reduce work-zone collisions. Making its debut along a central Texas stretch of I-35, the system uses sensors to measure the speeds of approaching vehicles and then warns drivers through portable, electronic signs about upcoming traffic backups due to night lane closures in work zo
  • Transport is evolving – and road safety must keep pace, says Parifex
    May 25, 2023
    France-headquartered Parifex works at the cutting edge of Lidar-based speed control systems. CEO Paul-Henri Renard discusses safety advances made in recent decades - and the causes of accidents that remain…
  • Caltrans takes the long view of transport
    October 21, 2016
    Caltrans’ Malcolm Dougherty took time out of his schedule at ITS America 2016 in San Jose to talk to ITS International about current and future challenges. As director of California Department of Transportation (Caltrans) since mid-2012, many would say that Malcolm Dougherty has one of the best jobs in transportation. Caltrans is one of the most progressive and innovative transport authorities, implementing policies to encourage cycling, piloting new
  • Tackling speed enforcement with electronic vehicle recognition
    July 4, 2012
    An innovative electronic vehicle registration system is being rolled out across Bangkok in Thailand, with road safety and speed enforcement the principal aims Equipment contracts and partnerships relating to a system of electronic vehicle registration (EVR) have been forming in Bangkok over the past couple of years. EVR can be applied to tackle a broad range of problems for transport authorities, including tax evasion, crime and insurance fraud. For Thailand’s Department of Land Transport (DLT), its EVR sy