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

  • Kapsch connecting in Spanish corridor
    October 31, 2024
    57km stretch is on the A8 highway near Bilbao in north of country
  • Communications for cooperative infrastructures and safety
    February 2, 2012
    Scott Andrews of Cogenia Partners, LLC details the findings of the VII Proof Of Concept work carried out to verify the effectiveness of 5.9GHz-based communication for future US cooperative infrastructures
  • ANPR developments in the Spanish market
    February 2, 2012
    Gonzalo García Palacios, R&D engineer with Quality Information Systems, writes about ANPR developments in the Spanish market In an increasing number of countries, Automatic Number Plate Recognition (ANPR) systems are a growing market. They have become a fundamental part of many ITS systems, whether publicly or privately owned, and essential to any user which looks seriously to give the best services to its customers or wants to improve its facilities' performance.
  • Prowag signals change to vision statement
    February 15, 2024
    New pedestrian signal requirements designed to make crossings safer for the visually impaired mean that accessible signals are no longer just an option for US cities and municipalities. They now have the backing of the law, explains Andrew Stone