Claims and counterclaims on Stopped Vehicle Detection

29/01/2020 | CHRIS AMES

Highways England has re-opened the debate over the effectiveness of its current stopped vehicle detection (SVD) technology, claiming that it is ‘effective in all levels of traffic’.

The government-owned company made the claim in a statement it issued in response to ‘recent commentary about smart motorways’.

However, the statement contradicts both a recent letter to a coroner from Highways England’s chief engineer and recent statements to Highways.

In December, Mike Wilson wrote to Emma Brown, area coroner for Birmingham and Solihull, following an inquest into the case of eight-year-old Dev Naran, who died when the stationary car in which he was a passenger was hit on the M6 at a time when the hard shoulder was being uses as a live lane.

Mr Wilson described Highways England’s radar-based SVD system, which is in use on two sections of the M25 and being retrofitted to the M3, as ‘a radar system which detects stopped vehicles in low flow conditions’.

He told Ms Brown: ‘We are exploring other technologies which could reduce the risk to stopped vehicles in higher flow conditions’ but warned that ‘Highways England is unable at this time to set a timetable if and when this technology will be rolled out on the motorway network’.

Highways England has also acknowledged in correspondence with Highways that SVD does not work in conditions of high traffic flow.

Last week a spokesperson told Highways: ‘Recognising the risk to single stopped vehicles in low flow conditions on All Lane Running, we trialled and committed to roll out a stopped vehicle detection system specifically designed to mitigate the risk.’

The spokesperson added: ‘In higher flows MIDAS will take over.’

This is a reference to the Motorway Incident Detection and Automatic Signalling, which is in use across smart motorways and acts as a proxy for a system by detecting slow moving traffic. Reliance on this system has been criticised as it may only work once traffic is already effectively stationary, possibly because the stopped vehicle has already been hit.

In October, Highways England chief executive Jim O’Sullivan told the Transport Select Committee that SVD ‘works’, but said: ‘we are rolling out stopped vehicle detection. It is challenging because radar is designed to ignore stationary things and detect things that are moving. To have a radar system that can see that something has stopped moving is a challenge.

‘The MIDAS system already detects slowing traffic, so that, if you break down and traffic starts to slow behind you, there are automatic signs and signals, but we are now starting to roll out stopped vehicle detection. It is not without its challenges. Indeed, we are looking to other technologies in the future and what might be out there to help.’

Jack Cousens, head of roads policy for the AA told Highways; 'There is a clear overreliance of technology on "smart" motorways, which by Highways England’s own admissions falls short of its targets.

'Stopped Vehicle Detection provides too many false positives in high traffic conditions which overwhelms the control centres, and MIDAS can’t identify a stopped vehicle in low traffic. Before the rollout of these motorways a full suite of systems should have been tested and modified before being installed on every scheme.

'However, the simplest solution would be to double the number of Emergency Refuge Areas for all new and existing schemes. Giving drivers more chances to get out of a live lane would reduce the risk of stranded vehicles being struck by the following traffic.'

Highways InProfile

latest magazine issue
Highways jobs

Senior Civil Engineer - Major Projects x 4

£45,894.00 - £54,952.00
We are looking for experienced engineers to help us progress a number of key projects and programmes Glasgow, Glasgow City
Recruiter: Transport Scotland

Technician - Maintenance

£31001.0000 - £36471.0000 per annum
Essex Highways is responsible for managing and maintaining one of the largest highway networks in the country
Recruiter: Essex County Council

Highways Contract Engineer

£46,731 - £49,764
The team helps provide a safe road network that operates efficiently and effectively.  Northamptonshire
Recruiter: North Northamptonshire Council

Principal Transport Planner

£46,731 - £49,764 (pro-rata)
We are looking for an experienced professional to join us on a six-month temporary contact as a Principal Transport Planner. Kettering, Northamptonshire
Recruiter: North Northamptonshire Council

Highways Maintenance Operative

£Competitive
We have a fantastic opportunity for a Permanent Highways Maintenance Operative Broughton, Brigg
Recruiter: Amey

Head of Highways Contracts & Network

£81,803 progressing to £90,664 per annum
The team includes approximately 60 directly employed HCC people Hertfordshire
Recruiter: Hertfordshire County Council

Principal Construction Manager

£Competitive
We are excited to offer a fantastic opportunity for a Permanent Principal Construction Manager Yorkshire and the Humber
Recruiter: Amey

Quality Technician

£Competitive
We are excited to offer a fantastic opportunity for a Permanent Quality Technician Yorkshire and the Humber
Recruiter: Amey

Senior Highway Engineer (Development Management)

£42679.0000 - £50211.0000 per annum
Senior Highway Engineer (Development Management)Permanent, Full Time£43,960 to £51,718 per annum*Location
Recruiter: Essex County Council

Project Manager (Major Projects)

£44,711 - £47,754
Are you an experienced project professional or engineer with looking to take the next step in your career? Halifax, West Yorkshire
Recruiter: Calderdale Metropolitan Borough Council

Senior Civil Engineer - Roads

£45,894 - £54,952
Are you an experienced engineer looking to support the Scottish Government’s national objectives. Scotland
Recruiter: Transport Scotland

Project Team Manager

£55,147 to £60,676 per annum
We are pleased to be able to offer an opportunity for a role as Design Team Manager Norwich, Norfolk
Recruiter: Norfolk County Council

Clerk of Works

GRADE 08 (£37,938 - £41,511)
Warrington is one of the most successful towns in the country Warrington, Cheshire
Recruiter: Warrington Borough Council

Assistant Projects Engineer

GRADE 06 (£29,093 - £32,654),GRADE 07 (£33,366 - £37,035), GRADE 08 (£37,938 - £41,511)
Warrington is one of the most successful towns in the country Warrington, Cheshire
Recruiter: Warrington Borough Council

Principal Engineer - Traffic Management

£45,718 - £48,710 per annum
At Bath & North East Somerset Council we have one overriding purpose – to improve people’s lives. Bath, Somerset
Recruiter: Bath & North East Somerset Council

Vehicle Technician - Improver

£28,624 - £30,060
Transport Services is responsible for all aspects of transport and related services Huddersfield, West Yorkshire
Recruiter: Kirklees Metropolitan Council

Programme Delivery Office Administrator

Grade 9 £31,344 - £33,253 per annum
At Derbyshire, we have been on a journey to transform the way we deliver highway services to make them fit for the future Derbyshire
Recruiter: Derbyshire County Council

Support Officer - Highways Asset Management Systems

£31,586 - £34,314
We are a forward-thinking organisation dedicated to maintaining and improving our highway infrastructure. Lincolnshire
Recruiter: Lincolnshire County Council

Principal Transport Planner (Strategy)

£46,731-£49,764
We are looking for an experienced professional to join North Northamptonshire Council as a Principal Transport Planner (Strategy). Sheerness House, 41 Meadow Road, Kettering moving to Haylock House, Kettering Parkway, Kettering NN15 6EY, United Kingdom
Recruiter: North Northamptonshire Council

Electrical Engineer

Grade 9 £34,314 to £37,938 - Grade 10 £37,035 to £40,476 - Grade 11 £39,513 to £43,693 - Grade 12 £42,708 to £46,731 p.a.
The Construction Consultancy Services (CCS) team provide client-side construction consultancy services across a range of professional disciplines to d Durham
Recruiter: Durham County Council
SUBSCRIBE NOW

Latest Video

Subscribe to Highways today to ensure you keep your finger on the pulse of everything happening in the UK road network throughout the year.

SUBSCRIBE NOW