Dublin Tunnel Case Study - Electro Automation Group Limited

Dublin Tunnel
Speed Monitoring
Case Study
ITS Road Services was awarded the contract to supply
and install a Speed Monitoring System in the Dublin
Tunnel.

The Dublin Tunnel is the longest urban tunnel in Europe and its construction
was the largest civil engineering project in Ireland. The tunnel
is 4.5km long and has dramatically reduced the amount of HGV’s in
Dublin City Centre by diverting trucks arriving in Dublin Port through the
tunnel and straight onto the M50 motorway network.
ITS Road Services, a joint venture company between Egis Road and Tunnel Operation and
Electro Automation, was awarded a contract for the provision of speed monitoring system in the
Dublin Tunnel which allows the client to monitor driver behaviour in a confined space.
The scope of works included the supply, installation, testing and commissioning of Automatic
Number Plate Recognition (ANPR) cameras with onwards transmission to Variable Messaging
Signs (VMS) which displays the licence plate number of the offending vehicle. In order to minismise
disruption to traffic the installation was completed at night.
Three ANPR cameras and two VMS signs were installed in each lane, with the VMS units
downstream of the cameras at the appropriate distance.
The first two cameras are 200m apart in order to calculate the point speed of the vehicle between
the two points. The third and last camera in the bore will calculate time over distance—
speed from cameras one to three.
Journey Time Analysis software calculated the speed of the vehicle and if the vehicle is over
the threshold speed, the camera sends the licence plate number to the VMS; where it is displayed.
The ANPR camera also transmits data to the in-station.

Multiple reports can be run from this data—namely speed range by volume, by lane, by time
range, by date or date range. Computations such as percentage of traffic over threshold speed
can also be calculated and driving trends can be monitored and analysed.
The ANPR spikelet cameras are fully-integrated number plate recognition units incorporating
cameras, illuminator, data and image processing within a single sealed enclosure featuring high
memory and processing speeds. They have a built-in web interface.
The camera software provides a service for reception for out-station devices, diagnostic reporting,
remote configuration and onward transmission for multiple camera feeds.
The VMS units are full-colour LED display and measure 480mm by 960mm to ensure they can
be viewed by road users traveling at the appropriate speed.
Full communication with other electronic equipment is possible via RS232/RS485 and RJ45.
The visual capabilities are:
• Scrolling, flashing and rotating text messages
• Time functionality
• Moving images in GIF format
• Photo display

Electro Automation
Electro Automation Group is widely regarded as Ireland’s premier automation and security
specialist. Formed in Dublin in 1984, Electro Automation has since provided an enviable combination
of quality equipment supported by exceptional technical after sales and maintenance
service.
With our Head Office in Dublin and branches in Lisburn, UK and Germany, Electro Automation
has consolidated its core product range and in addition has made strategic decisions to add several
specialist manufacturing/niche market companies. We offer a combination of products,
sales knowledge, installation and technical support that is unparalleled, and provide a 24 hour 7
day a week maintenance support service.
Our success is based on pride in our technical competence and the practice of our belief that
exceeding customer expectations is our key aim.
Electro Automation, EA House, Damastown Industrial Park, Mulhuddart, Dublin 15
Tel: 01 824 66 66
Fax: 01 824 66 55
info@electroautomation.com
www.electroautomation.com