Motorists could face delays as work on a £20m M62 scheme near Wakefield gets underway next month.
The scheme – expected to take until the end of the year to complete – aims to relieve congestion.
The work, which is part of the government’s £317m national ‘pinch point’ programme, will include new CCTV cameras and automatic traffic monitoring between junction 30 at Rothwell and junction 32 at Pontefract.
Data will then be sent to the Highways Agency’s regional control centre in Wakefield which will be able to apply temporary speed limits on new electronic signs which will also be installed.
A spokesman for the Highways Agency said the hard shoulder would be closed from the end of February with 50mph speed limit in force.
There could also be overnight lane or carriageway closures.
He added: “This is a significant investment in safety and technology measures around one of the busiest motorway interchanges in the region.
“The combination of new electronic signs, automatic queue warning system and extended CCTV coverage into our regional control centre at Wakefield will increase the amount and frequency of information we can get to motorway users.
“This will help to provide safer and more reliable journeys and boost the economy.”