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.

Related Content

  • Huawei opens door to new opportunities in transport & logistics
    December 18, 2024
    By addressing the four key elements of a transportation network’s composition with a state-of-the-art digital solution, Huawei is bringing significant performance uplifts to all aspects of railway operations
  • AMG delivers Indian toll management transmission system
    January 27, 2012
    AMG Systems has supplied its AMG 9000 managed ruggedised Ethernet switches for ITNL in India which is using the transmission equipment for the new 119 km addition to Highway No 8.
  • Workzone safety can be economically viable
    October 24, 2014
    David Crawford looks how workzone safety can be ‘economically viable’. Highway maintenance is one of the most dangerous construction industry occupations in Europe. Research from The Netherlands on fatal crashes indicates that the risk facing road workzone operatives is ‘significantly higher’ than that for the general construction workforce. A survey carried out by the Highways Agency, which runs the UK’s motorway and trunk road network, has suggested that 20% of road workers have suffered injuries from pa
  • Cameras to target dangerous drivers at West Sussex level crossing
    February 10, 2017
    The UK’s Network Rail is installing red light safety cameras at a level crossing in West Sussex to stop drivers putting lives at risk. The new cameras will be equipped with number plate recognition technology, meaning motorists misusing the crossing can now be automatically identified and prosecuted by British Transport Police. These types of cameras were first introduced on Britain’s rail network in 2015 and, according to Network Rail, have since proven to be extremely successful with driver non-comp