The building of all new smart motorways is being cancelled over cost and safety concerns, the government has announced.

Some 14 planned schemes, including 11 already on pause and three set for construction, will be scrapped due to finances and low public confidence.

Smart motorways are a stretch of road where technology is used to regulate traffic flow and ease congestion.

They also use the hard shoulder as an extra lane of traffic, which critics claim has led to road deaths.

Existing smart motorways - making up 10% of England's motorway network - will remain and undergo a previously announced safety refit to create 150 more emergency stopping places and improved technology.

Prime Minister Rishi Sunak - who pledged to ban smart motorways during his leadership campaign - said "all drivers deserve to have confidence in the roads they use to get around the country".

The Department for Transport said the new schemes would have cost more than £1bn, and cancelling them would allow time to track public trust in smart motorways over a longer period.

There are three main types:

All three models use overhead gantries to direct drivers. Variable speed limits are introduced to control traffic flow when there is congestion, or if there is a hazard ahead. These limits are controlled by speed cameras.

Seven of the 14 projects that have been cancelled were going to involve converting stretches of motorway into "all-lane running" roads where the hard shoulder is permanently removed.

They will now remain as "dynamic" smart motorways where the hard shoulder can be opened as an extra lane during busy times.

The construction of two stretches of smart motorway from junctions six to eight on the M56, and from 21a to 26 on the M6, will continue as they are already more than three quarters complete.

Smart motorways were developed to create more capacity and cut congestion on roads, without spending money and causing disruption building news ones.

However, they have been criticised by MPs and road safety bodies, including the AA and RAC.

Edmund King, the AA's president, said he welcomed the decision to scrap planned smart motorways and said it was a "victory for common sense", calling for the hard shoulder to be reinstated on existing smart motorways, including a permanent red 'X' and new lane markings. He hoped the government's decision marked the end of "deadly" smart motorways.

He added: "We have had enough coroners passing down their deadly and heart-breaking judgments where the lack of a hard shoulder has contributed to deaths".

Meanwhile, the RAC called the plans a "watershed announcement", saying its research showed that smart motorways were "deeply unpopular with drivers".

Claire Mercer, whose husband died on a smart motorway in South Yorkshire in 2019, welcomed the move but pledged to continue campaigning for the hard shoulder to return on every road.

Jason Mercer and another man, Alexandru Murgeanu, died when they were hit by a lorry on the M1 near Sheffield after they stopped on the inside lane of the smart motorway following a minor collision.

Mrs Mercer said: "I'm particularly happy that it's been confirmed that the routes that are in planning, in progress, have also been cancelled. I didn't think they'd do that.

"So it's good news, but obviously it's the existing ones that are killing us. And I'm not settling for more emergency refuge areas."

A spokesperson for the Liberal Democrats said the scrapping of further smart motorways was "long overdue".

"The lives of too many families have been turned upside down by the death of a loved one on these roads," they added.

Louise Haigh MP, Labour's transport secretary, said: "We know smart motorways, coupled with inadequate safety systems, are not fit for purpose and are putting lives at risk", adding that ministers should "reinstate hard shoulders on existing smart motorways".

These motorway sections will no longer become new all-lane-running smart motorways:

The following stretches were due to be converted to all-lane-running, but will remain dynamic smart motorways:

Schemes for the following motorways were in the pipeline, but have been cancelled:

Meera Naran, whose eight-year-old son was killed on a smart motorway in 2018 when the stationary car he was in was hit by a lorry, said the announcement was a "huge achievement" but she would continue campaigning.

She said smart motorways and regular motorways "carry very different benefits and risks" and suggested merging both models.

Speaking on BBC One's Breakfast programme, Ms Naran said she would campaign for what she called "controlled motorways" which use the technology of smart motorways with the benefits of a hard shoulder.

In 2020, a BBC Panorama investigation found 38 people had died in the previous five years on smart motorways.

Transport Secretary Mark Harper said: "Today's announcement means no new smart motorways will be built, recognising the lack of public confidence felt by drivers and the cost pressures due to inflation."

(editor-in-charge：Press center6)