Skip to main content

Dartford Crossing gets enhanced PA system

A new traffic safety system installed on The Dartford Crossing, the busiest estuarial crossing in the UK, is benefitting from a high quality public address (PA) system to communicate with drivers in the event of an incident. To combat the noisy road and traffic conditions, PEL Services installed a Bosch Praesideo digital PA system, with master and slave network-controllers and incorporating ambient noise sensing to automatically adjust sound levels to compensate for substantial variations in the levels o
May 25, 2016 Read time: 2 mins
A new traffic safety system installed on The Dartford Crossing, the busiest estuarial crossing in the UK, is benefitting from a high quality public address (PA) system to communicate with drivers in the event of an incident.

To combat the noisy road and traffic conditions, 8431 PEL Services installed a 311 Bosch Praesideo digital PA system, with master and slave network-controllers and incorporating ambient noise sensing to automatically adjust sound levels to compensate for substantial variations in the levels of background traffic noise.  The system has been set to maintain the sound level at 5dB above ambient levels, in real time, to ensure announcements are audible but not anti-socially loud.

Twelve Bosch LBC 3432-03 unidirectional projection speakers have been used with Praesideo at four locations; three speakers on each pole, at different heights to cater for the varying vehicle heights.  The speakers have been configured in a contingent redundant arrangement, as an additional fail-safe. There are three amplifiers for each location including one on standby and the entire system is connected to an uninterrupted power supply.

For more information on companies in this article

Related Content

  • 9 – 10 November: Ertico’s first virtual ITS European Congress
    October 13, 2020
    Ertico’s mission is to bring the ITS community the same energy and engagement of previous face-to-face Congresses, yet in just one click. Participants will access an entirely virtual event with the 3D setting of an interactive platform and a range of tools to facilitate engagement, networking and debate with ITS key players.
  • Strike action prompts commuters to try something different
    June 2, 2014
    David Crawford highlights responses to transit disruption on both sides of the Atlantic. Shortly before workers at San Francisco Bay Area Rapid Transit (BART) began a lengthy round of pay and conditions-related strikes in summer 2013, impacting on the daily lives of 400,000 communities, online ridesharing group Avego publicised a new web address: bartstrike.com. By the start of the following week, Avego was encouraging stranded commuters to download its smartphone app by offering them the chance in a raffle
  • UX: No-one gets left behind
    March 24, 2025
    As transportation agencies prepare for a digital evolution, they need to be thinking about more than just transport to make sure users can all be on the journey too, suggests RideFlag Technologies…
  • IRF takes politicians to task on road safety
    January 7, 2013
    The International Road Federation has issued a wake up call to government ministers, in the form of its Vienna Manifesto on ITS. Four years on from coming to a key decision on ITS, the International Road Federation (IRF) now faces a further question – how can it ensure its Vienna Manifesto on ITS achieves maximum impact? This is a challenge the organisation is not taking lightly. Issues the manifesto has been drawn up to address have become more acute in the time taken to publish it and are forecast to wors