Rumble strips should be used on single carriageways, TRL says

23/08/2019 | CHRIS AMES

Transport research experts have called on Highways England to extend the use of 'rumble strips' to its single carriageway roads to improve safety.

TRL, formerly the Transport Research Laboratory, said its latest research highlights the benefits of installing rumble strips – continuous line marking with ribs across the line at regular intervals - along the side of single carriageway roads to mitigate run-off-road (RoR) incidents

It said the finding in a new report presents a good opportunity for Highways England to bring single carriageway sections of the strategic road network up to the same safety standard as the dual carriageway sections.

As Highways has reported, Highways England’s single carriageway roads have a higher casualty rate than the rest of its network and the government-owned company is making little progress against a target to improve roads, mainly single carriageways, that have a low rating for their inherent safety.

Weatherline Ribline edge of carriageway road marking from WJ Group

TRL said that rumble strips are seen internationally as one of the lower cost and easier to install road safety measures, which can achieve considerable incident reductions.

It said that in the UK they are placed primarily on the edge of dual carriageways while, many other countries also place rumble strips along the centre line of dual and single carriageways as well to mitigate head-on, side swipe and RoR incidents.

TRL added that new innovative rumble strip patterns, such as the sinusoidal design which produces less external noise, are increasingly being utilised in the USA and Europe for their higher benefits compared with traditional types.

It added that rumble strips may have some drawbacks, which need to be considered during site selection and placement design. These considerations and the international best practice in mitigating them are presented in detail in its report.

Highways England’s head of road safety, Richard Leonard, said: 'Rumble strips are already in place on our motorways, dual carriageways and some single carriageways. We commissioned this research to better understand the benefits of installing them on all of our single carriageways and will now carefully consider the findings.'

Paul Aldridge WJ Group sustainability director, said: 'Raised profile edge markings are a vital low cost engineering road safety measure. There is no doubt that they have saved countless lives by warning drivers who have inadvertently strayed out of lane.'

Traffic Signs Manual Chapter 5 - Road Markings (2019) states that two types of rumble strip are specified, one for use on motorways diagram 1012.2 (S11-4-12) and one for all-purpose roads with a hard strip or hard shoulder.

It details specifications for use and spacing for these including that the base marking must be no more than 6mm high. The upstand of the ribs above the base marking must not exceed 11mm for motorways and 8 mm for all purpose roads 1012.3 (S11-4-13).

Raised profile markings must not be used as part of any marking or in any circumstances other than as specified in section 2.6 the chapter states.

Highways InProfile

latest magazine issue
Highways jobs

Traffic Management Technician - WMF2240e

£28,598 - £29,540
Westmorland and Furness Council is seeking a committed and technically capable individual to join our Traffic Management Team Kendal, Cumbria
Recruiter: Westmorland and Furness Council

Senior Technician-Road Closures

£35,422 - £38,730
The Network Planning division is seeking to appoint someone who is enthusiastic and a team player Derbyshire
Recruiter: Derbyshire County Council

Technician - Road Closures (2 Posts)

£29,719 - £31,691
The Network Planning division is seeking to appoint someone who is enthusiastic, an excellent team player Derbyshire
Recruiter: Derbyshire County Council

Structures Inspector

£Competitive
We are excited to offer a fantastic opportunity for two Permanent Structure Inspectors to join our dynamic SBIM team Bristol
Recruiter: Amey

Highways Maintenance Operative

£Competitive
We have fantastic opportunities for a permanent Highways Maintenance Operatives Kettering, Northamptonshire
Recruiter: Amey

Site Manager

£Competitive
We are excited to offer a fantastic opportunity for a Permanent Site Manager Bristol
Recruiter: Amey

Principal Commercial Manager

£Competitive
The SBIM contract involves delivering inspection and maintenance programmes for National Highways Bristol
Recruiter: Amey

Senior Commercial Manager

£Competitive
We are excited to offer a fantastic opportunity for a Permanent Senior Commercial Manager Nottingham, Nottinghamshire
Recruiter: Amey

Highways Maintenance Operative

£Competitive
We have fantastic opportunities for a permanent Highways Maintenance Operatives. Northampton, Northamptonshire
Recruiter: Amey

Managing QS

£Competitive
In this role, you will support the Senior Commercial team in the end to end commercial process for the Area 12 contract. Yorkshire and the Humber
Recruiter: Amey

Highways Inspection Officer

£32,962 - £36,791 per annum
We have an exciting opportunity for a Highways Inspection Officer to join us! Windsor, Berkshire
Recruiter: The Royal Borough of Windsor & Maidenhead

Highways Technical Assistant

£29,064 - £31,537
Are you looking for a varied role in a dynamic and innovative team environment that can make a real difference to North Yorkshire’s highways? Leeming Bar, Northallerton
Recruiter: North Yorkshire Council

Street Lighting Electrical Inspector

£34,434 - £38,220 per annum
Do you hold an ONC in electrical engineering or City & Guilds Electrician? Northallerton, North Yorkshire
Recruiter: North Yorkshire Council

Senior bridge Engineer - WMF2212e

£47,181 - £48,226
You will be the key responsible engineer for this area and will also provide technical advice and guidance to our team Cumbria / Various
Recruiter: Westmorland and Furness Council

Civil Enforcement Officer - WMF2221e

£28,598 - £29,540
Are you seeking an active and challenging role, part of a friendly and welcoming team? Kendal, Cumbria
Recruiter: Westmorland and Furness Council

Bridge Engineer - WMF2219e

£42,839 - £44,075
We are currently seeking to recruit an experienced and enthusiastic Bridge Engineer Kendal, Cumbria
Recruiter: Westmorland and Furness Council

Senior Public Transport Officer

£42,839 - £46,142
We are looking for an experienced public transport professional to become our Senior Public Transport Officer. Northamptonshire
Recruiter: North Northamptonshire Council

Principal Transport Planner (Strategy) (Fixed-Term)

£48,226-£51,356
We are looking for an experienced professional to join as a Principal Transport Planner (Strategy) Northampton, Northamptonshire
Recruiter: North Northamptonshire Council

Mobile Street Scene Operative

£24,796 to £25,989 per annum
The Waste and Street Scene department requires enthusiastic and committed mobile street cleansing operative. Northallerton, North Yorkshire
Recruiter: North Yorkshire Council

Senior Technician - Highways Design (2 Posts)

Grade 10 £35,422 - 38,730 per annum
An exciting opportunity has arisen within the Professional Services Section Derbyshire
Recruiter: Derbyshire 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