What are the parts of a smart motorway?
There are three important parts of a smart motorway:
- Smart technologies such as sensors, CCTV cameras, message signs, speed and lane control signals, and automated enforcement systems
- Smart monitoring and management
- Smart drivers.
How do the smarts work?
Smart motorways reduce congestion by carefully controlling the flow of vehicles.
Detectors under the road and radars mounted on lighting poles and gantries count the number of vehicles in each lane, as well as the speed they are travelling.
The smart system calculates how fast the road is becoming congested. It also factors in what is likely to happen based on traffic records that are continually updated and monitored. The smart system then automatically adjusts the speed limit to pace the traffic and delay queues being formed.
Watch this video to see how pacing traffic flow gets more vehicles through.