A highway section equipped with active traffic management technology to dynamically control vehicle flow and increase capacity without widening the road footprint. These systems use overhead gantries to display variable speed limits, open or close lanes, and sometimes convert the hard shoulder into a running lane during peak congestion. Sensors and cameras feed data to a control center that adjusts the parameters in real time to prevent phantom jams.
Heard on the job
The overhead signs on the smart motorway dropped the speed limit to fifty ahead of the stalled lorry.
Also heard as
- managed motorway
- active traffic management