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

  • DSRC? ‘It’s become a faith-based thing’
    March 2, 2021
    The US FCC’s decision on 5.9GHz led to Applied Information offering DSRC buybacks to DoTs. Bryan Mulligan tells Adam Hill that we now just need to get on and roll out CV technology...
  • ITS industry needs more effort to get to the future
    January 19, 2012
    Eric Sampson, visiting professor at Newcastle University and City University London and ambassador for ITS-UK, provides a retrospective on the last couple of decades and takes a look at what the ITS industry still needs to do to get to where it needs to be
  • C/AVs could mean cheaper roads
    October 28, 2019
    The safety benefits of C/AVs have long been promoted – but research suggests they should also contribute to cheaper roads. David Crawford investigates the potential benefits in infrastructure costs Building narrower freeway lanes to accommodate the enhanced route-tracking capabilities of connected and autonomous vehicles (C/AVs), running in platoon conditions, could result in cost savings of £0.5 million (€0.56 million or US$6.5 million) for every km of road length built. Such benefits could be secur
  • Transition to all electronic tolling leads to cost savings
    February 2, 2012
    How a temporary congestion-relief solution resulted in the North Texas Tollway Authority's transition to all-electronic toll collection and potential savings of up to $472 million by 2045. By Carla Kienast, ETC Corporation