A new traffic control system has been launched on the M1/Westlink route in the city of Belfast in Northern Ireland.

The new £10m ($15.6m) system will monitor the speed and flow of traffic on the route using detection loops buried in the carriageway of the road.

The traffic control system will automatically adjust speed limits, displaying a mandatory speed limit to inform drivers.

Drivers will also have to obey variable mandatory speed limits to ease congestion.

Mandatory variable speed limits have been introduced in the city following new legislation by the government to enable their enforcement by the police.