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

  • New digital CCTV system to monitor traffic flow in Aberdeen
    May 31, 2017
    A new US$386,000 (£300,000) network of digital CCTV and automatic number plate recognition (ANPR) cameras, including automated alert systems, are being installed on key routes around Aberdeen, Scotland to monitor traffic flow and journey times.
  • Improving urban traffic control in Atlanta
    January 27, 2012
    Hugh Colton, Georgia DOT details move to improve urban traffic control in the Atlanta area. With a significant proportion of traffic using freeways and toll-ways, along with a significant investment in roadway infrastructure, urban arterials are often the poor relation when it comes to ITS investment. Hitherto the primary means of Urban Traffic Control (UTC) has been the ubiquitous traffic signal. Many traffic signals still operate in a standalone mode and traffic detection is often broken, leaving the sign
  • IRD: from the ground up
    September 16, 2021
    IRD is undertaking a comprehensive review of its road safety and monitoring solutions. A series of initiatives is building on the company’s in-pavement expertise, bringing considerable additional value for the customer to the traditional range of products while complementing these with wholly new technologies
  • IRF World Congress 2024: moving ahead
    October 22, 2024
    On the last day of the three-day IRF World Congress 2024 in Istanbul, attendees heard what can work best, what can be improved and what the future might hold for those pursuing sustainable goals. David Arminas reports.