The hard shoulder trials will be tested on the eastbound and westbound carriageways on Sunday between 8am and 10am, subject to the completion of minor works today and tomorrow.
Should the trials go ahead, traffic officers in the Highways Agency regional control centre at Wakefield will open up the hard shoulder to traffic by setting the overhead signs to tell drivers they can use the hard shoulder as an extra lane.
Variable mandatory speed limits, indicated by a red ring, will also be displayed to help improve traffic flow and reduce congestion.
The test takes place between junctions 26 (Chain Bar) and 27 (Gildersome/Birstall).
Lane closures might also be tested across any of the four lanes – this will be by way of a red X.
This will be the second section of the new managed motorway to be brought into operation, following successful testing and opening of the first section, between junctions 27 and 28, in May.
Further testing will be carried out over the coming weeks before this section becomes fully operational as a managed motorway later in July.
The temporary 50mph speed limit between junctions 26 and 28 (was lifted this morning (Friday July 5).
The 50mph speed limit between junctions 25 and 26, and between junctions 28 and 30, remains in place while work on these sections continues.