Intelligent Transportation System for Sligo

Intelligent Transportation System for Sligo!

Images Photo 1
Images Photo 2

Sligo County Council to install State of the Art Traffic Signal Technology along the Inner Relief Road, as part of the Transport Infrastructure Ireland (TII) funded N4-N15 Sligo Urban Improvement Scheme.

Today, Wednesday 14th August, Sligo County Council signed a contract with Fox Building & Engineering Ltd. to upgrade the dual carriageway from just north of Hughes Bridge to just north of the R291 Rosses Point Road junction.  It will include the installation of state of the art traffic signal technology to optimise traffic flows through the junctions in realtime.

A total of 13 junctions along the Inner Relief Road and the adjacent Local/Regional Road network will be upgraded to an Urban Traffic Control System, encorporating the latest advances in traffic signal and fibre-optic communication technology.  This feeds into Sligo County Council’s ‘Smart City’ initiative and is included in the Total Scheme Budget of just over €14 million.

How it will work?

Intelligent Transportation System (ITS) will use real-time data from vehicle detectors to enable the traffic signals speak to each other and make ‘intelligent’ decisions, which will optimise traffic flow.  The aim is to make the road network as safe and efficient as possible.


  • This ITS investment will improve safety, offer consistency in travel times and reduce congestion that will allow for fuel efficiency, as well as reduce air pollution.
  • The system will also have the capacity to allow for Emergency Vehicle green waves and the potential for public transport priority.
  • This Traffic Management Scheme, and its development, will assist in meeting Sligo County Council’s Smarter Travel and Sustainable Transport objectives with the provision of facilities for pedestrians and cyclists in both directions, north and south.

Start date and How long?

Construction is expected to commence in the coming weeks, and will involve significant traffic management arrangements.  Expected duration of the construction works is 12 months.

Background and Detail:

Upgrading 730m of the existing N4-N15 dual carriageway, northwards from Hughes Bridge, to three lanes in both directions, together with junction improvements at the R870 Markievicz Road and N16 Duck Street, and transforming the R291 Rosses Point Road to a T-Junction.

Improvements to open space at Salmon Point Recreation Area and Rosses Point Road/N15 junction.  The scheme will repair the masonry arch section of the Copper River Culvert under the Rosses Point Road as well as replace the culvert crossing the N15.  Also the construction of six retaining walls, the provision of drainage systems, various utilities works, earthworks, pavement construction, boundary treatment, landscaping, street lighting, the provision of enhanced footways and cycle-ways as well as the installation of the Urban Traffic Control System.