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

  • The bus to IP access control has left the station
    April 9, 2014
    David Lenot examines how mass transit agencies can benefit from IP access control and the features required to ensure a sound investment. With millions of commuters relying on their services daily, mass transit agencies are faced with the unfortunate reality that their operations are susceptible to threats. A single incidence of unauthorised access to restricted areas and buildings could be the catalyst to damaged property, endangered lives or other unfortunate events. Unlike an international airport
    Read More
  • Hampshire Constabulary opts for Truvelo speed enforcement
    March 8, 2013
    The UK’s Hampshire Constabulary’s Safer Roads Unit has recently introduced new mobile speed enforcement technology to combat excessive speeds on the county’s roads. The LASERwitness Lite from Truvelo comprises laser speed measurement and digital video technology, combined with built in infra-red illumination for night time operation. The unit is extremely compact and can even be deployed from a police motorcycle if desired. This is beneficial in those locations where there is no suitable parking for a spe
    Read More
  • Dynamic Message Signs : Don’t replace, refurbish and upgrade
    August 12, 2015
    Refurbishing old dynamic message signs can save money and increase technical capabilities as David Crawford discovers. Evidence is growing on both sides of the Atlantic of the scope for retrofitting old or technically out-of-date dynamic message signs (DMS) with new electronic equipment, to save on the costs of installing full-scale replacements. In the last four months of 2014, a number of US states progressed programmes that achieved savings of more than US$1.75 million (€1.56million).
    Read More
  • Intertraffic 2022 gets ready for business
    January 27, 2022
    Relaxation of Dutch Covid rules means event at RAI Amsterdam will have 'usual occupancy'
    Read More

Highlighted Content