A major road in Northamptonshire will be regularly closed overnight while a scheme installing "congestion busting" technology continues.
The Highways Agency is introducing traffic detection loops and attaching electronic signs to gantries.
It is part of a scheme which began in July to ease congestion and make journeys safer on the region's roads.
The equipment will monitor traffic and flash warning notices to drivers when there are queues.
The signs will also inform drivers of journey times and alternative routes.
Traffic monitoring cameras will be installed at 49 locations along the route so Highways Agency workers can monitor the network.
The Agency said it hoped road users would benefit because the number of rear-end shunts would be reduced and drivers will be given other routes to take if roads become congested.
The road closures will start on 7 December with work expected to be completed by the Summer of 2010.