Editing M1 motorway (section)

==== M1 dynamic hard shoulder running, junctions 10 to 13 (Luton South to Milton Keynes South) ====
Work to introduce [[Smart motorway#Dynamic hard shoulder running|dynamic hard shoulder running]] on approximately {{convert|15|mi|km}} of motorway between Luton and Milton Keynes (J10-J13) was completed in December 2012, at a total cost of £327&nbsp;million.<ref>{{cite web|title=M1 Junctions 10–13 Improvements|url=http://www.highways.gov.uk/roads/road-projects/m1-junction-10-13-improvements/|url-status=dead|archive-url=http://webarchive.nationalarchives.gov.uk/20140207102850/http://www.highways.gov.uk/roads/road-projects/m1-junction-10-13-improvements/|archive-date=7 February 2014|publisher=Highways Agency}}</ref> This made the hard shoulder available to be opened as a traffic lane where additional capacity was necessary. Modifications were made to junctions 11 and 12,<ref name="HA5">{{cite web|title=M1 Jct 10 to 13 Improvements|url=http://www.highways.gov.uk/roads/projects/4482.aspx|url-status=dead|archive-url=https://web.archive.org/web/20120629032930/http://www.highways.gov.uk/roads/projects/4482.aspx|archive-date=29 June 2012|publisher=Highways Agency}}</ref> to allow for four lanes running through each junction, and the [[A421 road|A421]] from junction 13 to the [[Bedford]] southern bypass was also upgraded to two lanes each way during this period.<ref>{{cite web|title=A421 Bedford to M1 Junction 13|url=http://www.highways.gov.uk/roads/projects/4584.aspx|url-status=dead|archive-url=https://web.archive.org/web/20110605115952/http://www.highways.gov.uk/roads/projects/4584.aspx|archive-date=5 June 2011|publisher=Highways Agency}}</ref> The scheme will likely be converted to [[Smart motorway#All lane running|all lane running]] at some point in the 2020 decade, alongside all other dynamic hard shoulder running schemes. This was because a Government review into smart motorways found dynamic hard shoulder running was too confusing for drivers, leading to plans to convert all dynamic hard shoulders into permanent running lanes.<ref>{{cite web|last=|title=Action plan announced to boost smart motorway safety|url=https://www.gov.uk/government/news/action-plan-announced-to-boost-smart-motorway-safety|access-date=19 June 2020|website=GOV.UK}}</ref>