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.
Urban Traffic Control

For more information on companies in this article

Related Content

  • Machine vision - cameras for intelligent traffic management
    January 25, 2012
    For some, machine vision is the coming technology. For others, it’s already here. Although it remains a relative newcomer to the ITS sector, its effects look set to be profound and far-reaching. Encapsulating in just a few short words the distinguishing features of complex technologies and their operating concepts can sometimes be difficult. Often, it is the most subtle of nuances which are both the most important and yet also the most easily lost. Happily, in the case of machine vision this isn’t the case:
    Read More
  • Countering congestion’s cost
    May 6, 2015
    A new report on the economic costs of traffic congestion predicts the problem will worsen significantly in future. Jon Masters reviews the figures and some suggested solutions. New figures on the rising economic and environmental costs of congestion have been published by the US traffic data specialist Inrix and the UK’s Centre for Economics & Business Research (Cebr). Their report finds the problem much bigger than previously thought.
    Read More
  • Revealed: future of mobility in Hamburg
    October 7, 2021
    From 11-15 October, the ITS World Congress will present a myriad of innovations
    Read More
  • DriveWyze wireless Preclear system speeds weighstation waiting
    March 1, 2013
    Drivewyze aims to revolutionise the way weighstation bypass systems work with its Pre-Clear system. And it’s not just looking at weighstations, either… Pete Goldin reports. Truck drivers know the drill: pull off the high­way at every weighstation and wait. Carriers know the drill, too: every minute spent waiting there translates directly into dollars lost. Traditionally, the only alternative to this scenario is a transponder-based system, which allows trucks to bypass the sites using technology similar to
    Read More

Highlighted Content